J21
Color
| Parameter | Specification Value |
|---|---|
| Model | J21 |
| BT Version | New BT 5.4 (Latest High-speed Chip) |
| Single Ear Weight | 3.9g (Ultra Lightweight Design) |
| Speaker | 10mm Composite Diaphragm |
| Battery Life | 5 Hours Per Single Charge / Total 30 Hours With Charging Case |
| Case Battery | 400 mAh, Type-C Port |
| Latency | 45ms (Ultra-low Latency for Gaming) |
| Waterproof | IPX-5 (Sweat & Splash Resistant) |
| Material | Nickel-titanium Alloy |
| Transmission Distance | 10m Barrier-free Connection |
J21
Open Ear BT 5.4 Headphones Clip-on Wireless Earbuds with Directional Sound 45ms Low Latency
[Core Market Selling Points]
Innovative Clip-on Design & 3.9g Cloud-Like Wearing: Adopts non-in-ear clip-on structure, only 3.9g per earbud for truly weightless wearing. You can enjoy music while perceiving ambient sounds in real time to guarantee safety during outdoor sports.
99% Directional Sound Transmission & Sound Leakage Prevention: Built with professional directional sound transmission algorithm to deliver audio precisely into ear canal, cutting sound leakage by 99%. It protects your call & music privacy when used in offices or public areas.
Advanced BT 5.4 & 45ms Ultra-Low Latency: Powered by latest BT 5.4 chip, with 80% faster transmission speed and 120% stronger anti-interference performance. Paired with 45ms gaming-grade low latency mode to achieve perfect audio-video synchronization.
Nickel-Titanium Memory Alloy & IPX5 Waterproof: The connecting part uses high-strength nickel-titanium memory alloy, keeping shape after 10,000 bends. IPX5 sweatproof & waterproof design withstands heavy sweat during intense workouts and rainy conditions.
[Market Pain Points & Solutions]
Pain Point: Ear canal soreness or otitis media caused by long-time wearing of traditional earbuds.
Solution: J21 features open-ear clip design. It does not block the ear canal to keep it dry and ventilated, completely removing wearing pressure.
Pain Point: High latency of bluetooth earbuds leads to audio-video desync while gaming.
Solution: Upgraded 45ms professional gaming mode delivers millisecond-level connection response for accurate sound positioning.
[Market Trends]
The Boom of OWS Open-Ear Headphones OWS: The global market is shifting from in-ear earbuds to healthier open-ear audio solutions. Clip-on earbuds with attractive appearance and comfortable fit are the fastest-growing audio category in 2026.
Material Durability & Sports-Oriented Scenarios：Buyers prefer products equipped with memory metal and professional waterproof features. Multi-scenario adaptability for high-intensity sports is a core evaluation metric for mid-to-high end sourcing.
