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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a compact in-ear pair with a clever one-hand flip case and the newer Bluetooth spec, choose SUNJOM Flip; if you need open-ear earhooks that stay put during hard training and shrug off sweat and rain, choose RICHJOY Open Ear Earbuds. That is the short version. The rest of this page is the reasoning behind it.
• SUNJOM Flip biggest strength: a 360° rotatable flip charging case with a built-in LED power display, plus Bluetooth 5.4 and up to 40 hours of total playtime.
• SUNJOM Flip biggest trade-off: it is a traditional in-ear bud with a plastic shell, no waterproof rating listed and no environmental noise cancellation for calls — just "noise reduction" in the sound tuning.
• RICHJOY Open Ear Earbuds biggest strength: a true open-ear, earhook design at 7.5 grams per bud with IP54 water resistance and ENC (Environmental Noise Cancellation) microphones for calls.
• RICHJOY Open Ear Earbuds biggest trade-off: open-ear sound leaks by nature, it runs Bluetooth 5.3 rather than 5.4, and the earhooks are a bulkier look than a sealed in-ear bud.
• Who SUNJOM Flip is for: commuters, students and light gym-goers who want sealed in-ear sound and a case they can flip open with one hand.
• Who RICHJOY Open Ear Earbuds is for: runners, cyclists and anyone who wants to keep an ear on traffic while training, or who cannot stand the plugged feeling of in-ear tips.
The SUNJOM Flip is built around one idea: make the case easier to live with. The 360° rotatable flip charging case opens one-handed, which sounds like a small thing until you are standing on a platform holding a coffee in the other hand. The lid also carries an LED power display, so you can see roughly where the battery stands without opening an app or guessing from a blinking light. For a daily-carry pair, that is a genuinely useful bit of design rather than decoration.
On the audio side you get Bluetooth 5.4, which is the newer of the two Bluetooth versions on this page and is generally the better bet for connection stability and low latency — useful if you watch video on your phone and do not want lip-sync drift. The spec sheet lists 32 ohm impedance and 100 dB sensitivity, a combination that plays well with ordinary phones and laptops without needing a headphone amp. SUNJOM describes the tuning as Hi-Fi with deep bass and reduced background noise, and the case is rated for up to 40 hours of total playtime. There are multiple ear tips in the box and a lightweight ergonomic shell, so you can size the fit to your ear.
Who should skip it: if you run outdoors in the rain, sweat heavily, or need a microphone that actively cancels wind noise on calls, look at the other option. There is no IP rating listed for the Flip, and its noise handling is described as sound-side noise reduction, not call-side environmental cancellation. I would not treat it as a wet-weather pair.
RICHJOY Open Ear Earbuds: Who It's For
The RICHJOY Open Ear Earbuds go the opposite direction. Instead of sealing your ear canal, they hang on silicone earhooks and fire sound toward the ear canal with directional audio tech. Each bud weighs 7.5 grams. That is the whole pitch in one number: light enough that long sessions do not build pressure, and hook-shaped enough that they stay on when you move. RICHJOY explicitly frames them around not falling off and not pressing on the ear, which is exactly the complaint open-ear buyers are trying to escape.
The second pillar is calls. There is a built-in ENC microphone — Environmental Noise Cancellation — that uses AI to cut wind and background noise during online meetings and business calls. If you take a lot of voice calls on the move, that is a more targeted feature than generic "noise reduction," because it is aimed at the person on the other end of the line, not at your music.
The hardware details are worth knowing. Impedance is 16 ohm with a dynamic driver, which is a low-impedance, easy-to-drive setup. Bluetooth is 5.3 — a step behind the Flip's 5.4, but perfectly current and broadly compatible with iPhone, Android and PC. The enclosure is plastic and silicone, there is no headphone jack, and controls are touch-based. IP54 water resistance means they repel sweat, rain and splashes, which is the specific claim you want for high-intensity training and outdoor work. Battery life is listed at 40 hours average with the charging case.
Who should buy it: runners, cyclists, hikers, gym regulars and anyone who works out in the rain or sweats hard. Also anyone who simply dislikes the plugged-up feeling of in-ear tips, or who wants to hear a colleague or a car horn while audio is playing.
Side-by-Side: Which Should You Choose?
• Best for running and outdoor training → RICHJOY Open Ear Earbuds. IP54 plus 7.5-gram earhooks is a purpose-built combination for sweat and movement.
• Best for a sealed, immersive listen → SUNJOM Flip. In-ear buds block more of the room than an open-ear design can.
• Best for call clarity in wind → RICHJOY Open Ear Earbuds. ENC microphones with AI noise reduction are aimed squarely at voice.
• Best Bluetooth generation and latency → SUNJOM Flip. Bluetooth 5.4 versus 5.3 on the RICHJOY.
• Best for keeping awareness of traffic → RICHJOY Open Ear Earbuds. Nothing goes inside your ear canal, so ambient sound stays audible.
• Best for a pocket-friendly case you can open one-handed → SUNJOM Flip. The 360° flip lid and LED power readout are the standout design features here.
• Best for wet weather → RICHJOY Open Ear Earbuds. IP54 is a listed rating; the Flip has none listed.
• Tie on total playtime and touch controls → both. Each is rated up to 40 hours with the case, and both use touch control.
In my opinion the deciding question is not sound quality — it is whether you want your ears plugged. If you train outdoors, sweat heavily, want to hear traffic, or take a lot of calls in windy places, I would buy the RICHJOY Open Ear Earbuds. IP54, 7.5-gram earhooks and ENC microphones are three concrete answers to three real problems, and no amount of case cleverness replaces them for that use. If instead you want a compact in-ear pair with the newer Bluetooth spec and a case that opens itself almost, I would buy the SUNJOM Flip. Pick by your ear, not by the spec sheet's length.
FAQ
Yes — both are rated up to 40 hours of total playtime with their charging cases. That is a total figure, not a single-charge figure, so expect to top up from the case as you go.
On paper, RICHJOY, because it lists a dedicated ENC microphone with AI noise reduction for calls. SUNJOM describes noise reduction on the audio side instead, so its calls are more of a standard Bluetooth affair.
For heavy movement and sweat, I would say yes — the earhook format stays put and lets air in. For focus and bass, in-ear like the SUNJOM Flip is the stronger choice. Your gym style decides it.
I cannot quote figures here. Both sit in the budget tier by spec and by brand, so check the current price on Amazon using the button on this page before deciding.
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