* Bluetooth version: V5.0 + EDR* Support: A2DP, Headset, Hands-stereo* Digital display function* Speaker: 8MM true copper ring, high-quality sound effect* Battery capacity: Single headphone -60mAh (lithium battery) * Battery capacity: Charging case -800mAh (lithium battery)* Talk time: about 5 hours * Standby time: about 50 hours* Effective distance: within 10 meters * Charging time: Headphones about 1 hour* Charging time: charging case about 2 hours* Transmission frequency: 2.4GHz * Charging voltage: 5V * IP4 level anti-sweat* DSP technology, clearer call, CVC active noise reduction* Features: incoming call answering, incoming call rejection, hanging up, music playback / pause, hands-free calling, phone replay, Bluetooth reconnect, voice prompt, power display, call reportPlease contact customer service for the price of other customized solutions. Currently, customized Roda and Jerry solutions are supported.