How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want long battery life, a simple plug-and-play earbud with no app to learn, choose SGNICS T-Mobile REVVL 6; if you need active noise cancelling, clearer calls in loud places, and app-level sound tuning, choose Alpsnd Pro.
• SGNICS T-Mobile REVVL 6 — biggest strength: 31 hours of total battery life (7 hours per charge, topped up 3–4 times by the case) and a 13mm dynamic driver in a 3.8g in-ear shell.
• SGNICS T-Mobile REVVL 6 — biggest trade-off: No active noise cancelling and no companion app — you get touch controls and passive isolation only.
• Alpsnd Pro — biggest strength: Up to 50dB active noise cancelling, a 6-mic ENC call system, Bluetooth 6.0, and app EQ control.
• Alpsnd Pro — biggest trade-off: 20 hours total playtime and roughly 4 hours per charge, so it needs the case more often than the SGNICS.
• Pick SGNICS T-Mobile REVVL 6 if you want set-it-and-forget-it earbuds for long days, commutes, and workouts.
• Pick Alpsnd Pro if you want to silence the world around you and tune your own sound.
The SGNICS T-Mobile REVVL 6 (model name Rhymbo Series, built by Shenzhen USAMS Technology) is a true-wireless earbud aimed at people who want dependable basics. Its headline number is battery: 7 hours of playback per charge, with the case adding 3–4 more full charges for a 31-hour total when both earbuds are in use. That's the kind of figure that matters if you're the person who never remembers to plug things in. Drop them in the case overnight and you're covered for days of normal use.
The audio hardware is a 13mm compound-diaphragm dynamic driver, which is a large driver for an in-ear bud — the design intent is fuller bass and more detail than a tiny driver can manage. Connection runs on Bluetooth 5.3, which the sheet notes for lower power consumption and a stable signal at up to 12 meters. The earbuds are 3.8g each with an in-ear fit, made from ABS+PC plastic in black, and they include a cable, ear cushions, and a manual. There's a built-in ENC mic for calls and intelligent touch control for play/pause, answering calls, and waking Siri.
Alpsnd Pro: Who It's For
The Alpsnd Pro (made by Arktis Audio Inc.) is the more feature-dense of the two. The centerpiece is active noise cancellation rated to reduce noise by up to 50dB, which the sheet positions for travel, work, and commuting — public transport, cafés, offices. It layers three kinds of noise handling: active, environmental, and passive. For calls, a 6-microphone ENC system is quoted at reducing up to 97% of background noise so your voice stays intelligible in busy places. If your calls usually happen on a train platform or a city street, that's the spec that should get your attention.
Sound is handled by a 13mm dynamic driver too, with a 32-ohm impedance and a 20Hz frequency response — again, a bass-forward design. The difference is the companion app, which lets you adjust EQ and customize touch controls. Bluetooth 6.0 is the newer wireless version here, and the sheet calls out fast pairing, a stable connection, and low-latency mode for gaming and streaming so audio stays in sync with video. There's also an LED power display on the case, so you can see the battery state at a glance instead of guessing.
The trade-off is runtime. Alpsnd Pro is rated at 20 hours total playtime with about 4 hours average life per charge and a 1-hour charge time — meaning you'll return these to the case more often than the SGNICS. The buds are lightweight with soft ear tips and no ear hooks, sized for extended wear, and ship with three ear-tip sizes (S/M/L), a USB-C cable, and a manual. Color is black, shell is plastic, and the item weight is 1.52 ounces. Who should buy it: commuters, remote workers, gamers, and anyone who wants quiet plus app control. Who should skip it: if you want maximum hours between charges and zero setup, the SGNICS serves that better.
Side-by-Side: Which Should You Choose?
• Best for total battery life → SGNICS T-Mobile REVVL 6. 31 hours total versus 20 hours on the Alpsnd Pro.
• Best for phone calls in loud places → Alpsnd Pro. A 6-mic ENC system quoted at up to 97% background-noise reduction beats the SGNICS's single ENC setup.
• Best for gamers and video watchers → Alpsnd Pro. Low-latency mode and Bluetooth 6.0 keep audio in sync; the SGNICS runs Bluetooth 5.3 without a low-latency claim.
• Best for sound customization → Alpsnd Pro. App EQ control and configurable touch settings; the SGNICS is fixed out of the box.
• Best for a no-app, no-fuss setup → SGNICS T-Mobile REVVL 6. Auto-reconnect on opening the case and nothing to configure.
• Best for seeing your battery at a glance → Alpsnd Pro. LED power display on the case; the SGNICS doesn't list one.
• Best for long uninterrupted days → SGNICS T-Mobile REVVL 6. 7 hours per charge versus roughly 4 on the Alpsnd Pro.
Both are IPX4 waterproof in-ear buds, so the water-resistance story is a tie — neither is designed for submersion, but both are rated to shrug off splashes and sweat.
If I were buying for myself, I'd take the Alpsnd Pro. In my opinion, the active noise cancelling, the 6-mic call clarity, the app EQ, and the low-latency mode give it more ways to be useful across commuting, working, and gaming — and Bluetooth 6.0 with an LED battery display is a genuinely nicer daily experience. The catch is battery: 20 hours total and about 4 hours per charge means more case time. If your priority is going days without charging and never opening an app, I'd point you to the SGNICS T-Mobile REVVL 6 instead. Either way, check the current price on Amazon before deciding, since that's the one number that can shift the math.
Be careful here. Both of these are rated IPX4, which covers splashes and sweat — not full immersion or direct, sustained water jets. An IPX4 earbud is fine for a sweaty workout or light rain, but I wouldn't wear either one in a running shower or submerge it. If shower use is your goal, you want a higher water-resistance rating than IPX4.
Not all of them — and "waterproof" is often used loosely. Water resistance is graded, and IPX4 sits at the splash-resistant end of that scale. Both the SGNICS T-Mobile REVVL 6 and the Alpsnd Pro carry an IPX4 rating, meaning they handle sweat and splashes, but neither sheet describes them as safe for swimming or submersion.
They have a noise-cancelling mic for calls and a passive in-ear seal, but no active noise cancelling. The Alpsnd Pro is the one with ANC rated up to 50dB. If you mainly want to mute a noisy commute or office, that's the meaningful difference between these two.
The SGNICS T-Mobile REVVL 6 runs 7 hours per charge with 31 hours total using the case. The Alpsnd Pro is rated at roughly 4 hours per charge and 20 hours total, with about a 1-hour charge time. For sheer runtime, the SGNICS wins; for features per hour, the Alpsnd Pro packs more in.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.
See also: STECEi Open Ear Headphones vs ACANDYA USB C Earbuds, JBL Quantum 100 vs ZAICOLER RGB Lighting USB, Audio Technica ATH-EQ300M vs Yorlu Bone Conduction Headphones, Avantree Audikast 4 vs LVYEZHI Open-Ear Headphones