If you want a dedicated TV listening system with independent left- and right-ear volume adjustment for school breaks or shared home listening, choose Retekess TA008; if you need lightweight open-ear Bluetooth earbuds for classes, commuting, and movement around campus, choose Anker Soundcore C40i. For school, the C40i is the more versatile everyday-style pick, while the TA008 is the more specialized choice for watching TV and hearing nearby conversation.
Retekess TA008 vs Anker Soundcore C40i at a Glance
• Anker Soundcore C40i strength: An open-ear clip-on design with Bluetooth 5.4 and up to 21 hours of battery life; trade-off: it does not offer the TA008’s independent left/right gain adjustment or audio assistance mode.
• For the TA008: Choose it for TV audio, simple transmitter setup, or a listening arrangement shared with another person.
• For the C40i: Choose it for open-ear listening and wireless use beyond a dedicated TV setup.
The TA008 is a specialized TV listening system, not a conventional Bluetooth earbud set. Its 2.4G wireless connection pairs a transmitter with the headset, and the system supports optical, AUX, and RCA connections for compatible televisions. Retekess describes setup as plug and play, with no pairing required for its original headphones. The stated wireless transmission range is 30 meters, and the headset’s battery life is listed at 10 hours.
Its defining feature is the ability to adjust gain independently for the left and right ears. That can matter when one ear needs more volume than the other. A one-button audio assistance mode is also designed to make surrounding sounds easier to hear, which may be useful when someone wants to communicate while wearing the headset. The listed weight is 63 grams, and the design uses soft earbud-style tips.
I’d consider the TA008 for someone who mainly wants to hear television without relying on the TV’s built-in speakers, especially if separate ear-level adjustment is important. It can also connect multiple headphones at once, which suits shared viewing. I would skip it if the goal is a flexible Bluetooth pair for schoolwork, a walk between classes, and general listening from a phone; its core setup is a TV transmitter system, not the C40i-style Bluetooth design.
The C40i takes the opposite approach. It is an open-ear, clip-on Bluetooth earbud design rather than a sealed or soft-tip TV headset. The open-ear placement leaves the ear less enclosed, and the product information describes a flexible joint and attachable ear grips for a more stable fit. Its listed connection is Bluetooth 5.4, and its battery life is stated as up to 21 hours.
That combination makes the C40i the more natural fit for a student who wants earbuds for moving around, listening between classes, or keeping the ears open to surrounding activity. The open-ear form is also relevant for people who dislike having an earbud inserted into the ear canal. Button controls provide physical input rather than touch control, and the product information lists IPX4 protection.
There are clear limits to keep in mind. The C40i does not list a TV transmitter, optical/AUX/RCA inputs, separate left/right gain adjustment, or the TA008’s one-button audio assistance mode. It also lists no noise control, so it is not the choice here for blocking surrounding sound. If your main need is a dedicated TV listening system for someone who benefits from individually adjusted audio, the TA008 is better aligned.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-20 · 12 min read · Independent comparison
• Best for television listening → Retekess TA008. Its transmitter system supports optical, AUX, and RCA connections, and the wireless link is designed around TV use.
• Best for separate left/right volume adjustment → Retekess TA008. Gain can be adjusted independently for each ear, a distinctive practical advantage if balanced volume is difficult.
• Best for hearing nearby sounds while wearing the headset → Retekess TA008. Its one-button audio assistance mode is intended to make surrounding sounds easier to hear.
• Best for open-ear listening at school → Anker Soundcore C40i. Its clip-on, open-ear design is the more suitable match for a student who wants less enclosed ears while listening.
• Best for longer listed battery life → Anker Soundcore C40i. Its stated 21 hours exceeds the TA008’s 10-hour battery figure.
• Best sweat-resistant sports option → Anker Soundcore C40i. It lists IPX4 protection and a sports-oriented design; the TA008 sheet does not provide an IP rating.
• Best touch control Bluetooth earbuds for school → Neither is a touch-control pick. Both list button controls, and only the C40i is described as a Bluetooth earbud product.
• Best for shared TV listening → Retekess TA008. Its system supports connecting multiple headphones at the same time.
The school-use distinction is worth making plainly. The C40i is the better fit if “for school” means listening while walking around campus or choosing an open-ear form for day-to-day movement. The TA008 is more compelling if school use is incidental and the main task is watching television at home, perhaps alongside another listener.
Neither sheet specifies sound-isolation performance or a noise-canceling feature. So I would not choose either on the assumption that it will block classroom chatter or make a noisy commute quiet. The C40i’s open-ear layout points toward awareness, not isolation. The TA008’s audio assistance mode addresses hearing surrounding sounds, but it is a different function from noise cancellation.
For shoppers searching for the best touch control Bluetooth earbuds for school, the important correction is that neither model lists touch controls. Both use buttons. If physical buttons are acceptable, the C40i is the closer match for general Bluetooth use; the TA008’s buttons serve a more specific TV headset setup.
I would choose the Anker Soundcore C40i for school because its open-ear Bluetooth design, physical button controls, and 21-hour battery figure make it the more adaptable option for moving through a regular day. It is also the more logical pick if you want a best open ear earbuds for school style of fit or a best sweat resistant sports earbuds for school option, given its IPX4 listing.
I’d buy the Retekess TA008 instead for a focused TV setup, especially when independent left/right gain adjustment or shared listening matters. For everyday school use, though, my recommendation is the C40i.
For typical school-day listening, I’d choose the C40i. It uses Bluetooth, has an open-ear clip-on design, and lists 21 hours of battery life. The TA008 is better suited to TV listening through its transmitter system.
No. Both product sheets list button controls, not touch controls. The C40i is the Bluetooth earbud option; the TA008 uses a 2.4G TV transmitter system.
The TA008 is the purpose-built choice. It supports TV connections through optical, AUX, and RCA, and its system can connect multiple headphones at once. The C40i is not described as a TV transmitter headset.
Which has the longer battery life, and is either sweat resistant?
The C40i lists 21 hours of battery life, compared with 10 hours for the TA008. The C40i also lists IPX4 protection; the TA008 product information does not provide an IP rating.
sos
If you want a dedicated TV listening system with independent left- and right-ear volume adjustment, choose Retekess TA008; if you need open-ear Bluetooth earbuds for school, commuting, and everyday movement, choose Anker Soundcore C40i. For school, the C40i is the more adaptable pick, while the TA008 is better suited to TV listening and shared home use.
• Retekess TA008 strength: A 2.4G TV headphone system with separate gain adjustment for each ear; trade-off: it is designed around a transmitter rather than general-purpose Bluetooth listening.
• Choose the TA008 for TV audio, simple transmitter setup, or listening alongside another person.
• Choose the C40i for open-ear Bluetooth listening beyond a dedicated TV setup.
The TA008 is a specialized TV listening system, not a standard Bluetooth earbud set. Its 2.4G wireless connection pairs a transmitter with the headset, and the system supports optical, AUX, and RCA connections for compatible televisions. Retekess describes setup as plug and play, with no pairing required for its original headphones. The listed wireless range is 30 meters, and battery life is 10 hours.
Its most distinctive feature is independent gain adjustment for the left and right ears. That can be helpful for someone who prefers different volume levels in each ear. A one-button audio assistance mode is also intended to make surrounding sounds easier to hear while wearing the headset. The listed weight is 63 grams, and the design uses soft earbud-style tips.
I’d consider the TA008 for someone who mainly wants to listen to television without relying on the TV’s speakers, especially if separate ear-level adjustment matters. It can also connect multiple headphones at once, which suits shared viewing. I would skip it if I wanted flexible Bluetooth earbuds for classes, walking between buildings, and general phone listening. Its central purpose is a TV transmitter system.
The C40i takes a different approach. It uses an open-ear, clip-on Bluetooth design rather than soft tips that sit in the ear. The product information describes a flexible joint and attachable ear grips for a stable fit. It lists Bluetooth 5.4 and up to 21 hours of battery life.
That design makes the C40i the more natural fit for a student who wants earbuds for moving around or listening between classes while keeping the ears less enclosed. It may also appeal to someone who dislikes earbuds that sit inside the ear canal. The controls are buttons, and the product information lists IPX4 protection.
The trade-off is that the C40i does not list a TV transmitter, optical/AUX/RCA inputs, separate left/right gain adjustment, or the TA008’s audio assistance mode. It also lists no noise control, so I would not choose it for blocking surrounding sound. For a dedicated TV setup or individually adjusted ear volume, the TA008 is the closer match.
• Best for television listening → Retekess TA008. Its transmitter system supports optical, AUX, and RCA connections.
• Best for separate left/right volume adjustment → Retekess TA008. Gain can be set independently for each ear.
• Best for hearing nearby sounds while wearing the headset → Retekess TA008. Its one-button audio assistance mode is intended to make surrounding sounds easier to hear.
• Best for open-ear listening at school → Anker Soundcore C40i. Its clip-on, open-ear format better matches a student who wants less enclosed ears.
• Best for longer listed battery life → Anker Soundcore C40i. It lists 21 hours, compared with the TA008’s 10 hours.
• Best sweat-resistant sports option → Anker Soundcore C40i. It lists IPX4 protection and has a sports-oriented design; the TA008 sheet does not provide an IP rating.
• Best touch-control Bluetooth earbuds for school → Neither. Both list button controls, not touch controls. The C40i is the Bluetooth earbud option.
• Best for shared TV listening → Retekess TA008. Its system supports connecting multiple headphones at once.
The school-use distinction is straightforward. The C40i fits better if “for school” means listening while moving around campus or choosing an open-ear style for everyday use. The TA008 makes more sense if school is incidental and the main task is watching TV at home, perhaps with someone else listening too.
Neither product sheet specifies noise-isolation performance or noise cancellation. I wouldn’t choose either expecting it to block classroom chatter or quiet a noisy commute. The C40i’s open-ear layout is geared toward less enclosed listening, not isolation. The TA008’s audio assistance mode is meant to help make nearby sounds easier to hear, which is different from noise cancellation.
For anyone searching for the best touch control Bluetooth earbuds for school, note that neither model lists touch controls. Both use buttons. If physical buttons are fine, the C40i is the closer match for general Bluetooth use; the TA008’s controls serve a more specialized TV headset setup.
I would choose the Anker Soundcore C40i for school. Its open-ear Bluetooth design, physical button controls, and listed 21-hour battery life make it the more adaptable option for a typical day. It also fits searches for the best open ear earbuds for school or best sweat resistant sports earbuds for school, given its open-ear design and IPX4 listing.
I’d choose the Retekess TA008 instead for focused TV listening, especially when independent left/right gain adjustment or shared listening matters. For everyday school use, my recommendation is the C40i.
For typical school-day listening, I’d choose the C40i. It uses Bluetooth, has an open-ear clip-on design, and lists 21 hours of battery life. The TA008 is better suited to TV listening through its transmitter system.
No. Both product sheets list button controls, not touch controls. The C40i is the Bluetooth earbud option; the TA008 uses a 2.4G TV transmitter system.
The TA008 is the purpose-built choice. It supports TV connections through optical, AUX, and RCA, and its system can connect multiple headphones at once. The C40i is not described as a TV transmitter headset.
The C40i lists 21 hours of battery life, compared with 10 hours for the TA008. The C40i also lists IPX4 protection; the TA008 product information does not provide an IP rating.
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