•Upgrade Bluetooth-compatible 5.3: 10 meters transmission distance stable connection, low latency and lower loss, smooth viewing and gaming experience •Low-frequency strong balanced sound: Built-in composite diaphragm moving coil large unit sound horn. Professional three-frequency tuning-high-frequency bright/medium-frequency full/low-frequency vigorous to enjoy the audio-visual feast •Light and comfortable: Ergonomic design, reduce ear pressure, stable and comfortable to wear •Sensitive touch control: Dual-chip, regardless of left and right, single and double ears can carry out memory matching sensitive touch, more convenient to answer the call Specifications: Base Parameter Product Model BH28 Master Chip Bluetrum PPG Ship 5656 Waterpfoof Level IP4 Compatible System IOS/ANDROID/WINDOWS Special Features 5.3 wireless Bluetooth Main Feature True wireless, binaural call, high-fidelity stereo music playback; magnetic charging, convenient and fast; multi-function button, easy to operate; one-touch callback function; storage charging bin Connect Parameter BLuetooth 5.3+EDR Other Parameter Battery Type Polymeter Lithium Battery Headphone battery capacity 40mAh Charging box battery capacity 300mAh Charging Type Charging box USB socket charging, headphone magnetic charging Headphone charging time About 30 minutes Charging box charging time About 1 hours Headphone life time About 4 hours Charging box chargeable times About2 times Manipulation Mode Touth The firmware language English Material ABS Package included: •1 x Pair of Bluetooth-compatible Earphones •1 x Charging Case •1 x Charging Cable •1 x English User Manual