J21S
Color
| Parameter | Specification Value |
|---|---|
| Product Model | J21S |
| Bluetooth Version | V5.4 (Latest Low-power & High-speed Protocol) |
| Weight | 3.9g (Ultra Lightweight Design) |
| Speaker Size | 10mm Composite Diaphragm |
| Battery Life | 5 Hours Per Single Charge / Total 30 Hours With Charging Case |
| Battery Capacity | Earbud: 35mAh / Charging Case: 400mAh |
| Charging Time | Approx. 1.5 Hours, Type-C Fast Charge |
| Waterproof Rating | IPX-5 (Sweat & Rain Resistant) |
| Control Method | Smart Touch Control |
| Distance | 10 - 15m Barrier-free Connection |
| Material | Memory Elastic Alloy |
J21S
Open Ear BT 5.4 Headphones Clip-on Wireless Earbuds with Directional Sound 10mm Driver and 30H Playt
[Core Market Selling Points]
Innovative Clip-on Design & Ultra-lightweight: Features a non-in-ear clip-on structure with only 3.9g weight per earbud. It relieves ear canal pressure caused by traditional earbuds, and keeps you aware of ambient sounds during sports or commutes for both safety and comfort.
10mm Dynamic Driver & Hi-Fi Audio 10mm: Built-in 10mm high-performance dynamic driver delivers powerful bass, smooth midrange and crisp treble. Combined with 360° surround sound enhancement technology, it creates an immersive Hi-Fi audio experience.
Advanced BT 5.4 & Millisecond Connection: Powered by next-generation BT 5.4 protocol, with 80% faster transmission speed and 50% lower power consumption. Excellent anti-interference performance guarantees smooth and stable wireless audio even in complex environments.
30H Long Battery Life & IPX5 Waterproof: Supports 5 hours of playback on a single charge, and up to 30 hours total runtime with the 400mAh charging case. IPX5 sweat & water resistance handles heavy sweat during workouts and rainy weather for all-scenario use.
[Market Pain Points & Solutions]
Pain Point: Long-time wearing of conventional earbuds leads to sore ear canals or severe sound leakage.
Solution: J21S adopts directional sound transmission technology to deliver audio precisely into the ear canal, cutting sound leakage by 99%. The open-ear structure completely eliminates pressure on your ears.
Pain Point: Earbuds tend to shake and fall off during workouts.
Solution: The U-shaped elastic bracket has passed over 10,000 ergonomic tests. It fits snugly on the auricle and stays firmly secured even during intense jumping and running.
[Market Trends]
The Rise of Healthy Open-ear Listening OWS: The global audio market is rapidly shifting from in-ear earbuds to non-in-ear OWS clip-on earbuds. Consumers pay more attention to hearing protection, making clip-on earbuds the fastest-growing audio category in 2026.
Multi-scenario Versatility & Fashion Accessory: Earbuds are evolving from electronic gadgets into fashion accessories. J21S features streamlined body and multiple trendy color options, matching young users’ aesthetic demands for business, sports and daily scenarios.
