Product name: RD23 wireless headset Bluetooth-compatible Version v5.3 Transmission distance: 10 m (barrier-free) Charging interface: Type-c fast charge Wearing way: not into the ear to wear Charging duration: about 1-2 hours Standby time: 480 hours (used with charging cabin) Product color: black Specifications: 1. Open listening without listening, experience wireless sports, perceive environmental sounds in real time, and listen to sounds without listening to music, so that sports lovers can remain confused about the external environment while listening to music. 2. For outdoor use, new optimization design, continuous testing, ergonomic design, new optimization of safer/more stable/more comfortable headphones 3. No pain, comfort, no invasion, no swelling and pain in the ear canal, no swelling and soreness in long-term exercise, just enough comfort and no invasion 4. Graphene composite diaphragm, HiFi sound effect is not distorted, graphene composite diaphragm "0 loss" sound quality brings you a more real audio level 5. The listening mode without plugging the ears will not generate a loop with the ear canal, and the listening feeling close to the daily nature is more comfortable to listen to the scene. 6. Listen to songs and talk without worry of sound leakage, do not disturb people around you, directional sound wave transmission, sound transmission is more concentrated, and sound leakage phenomenon is effectively reduced 7. Not only comfortable and stable, but also super-lasting endurance, easy to deal with various training, to meet the needs of daily outdoor long-term use, LED intelligent digital display power Package Included: 1 pair * wireless headset 1*data line