Specifications: Large capacity battery for headphones and charging case for more than 4 hours. Built-in V5.0 Bluetooth chip, smart memory pairing, convenient and easy. Stable and fast Bluetooth connection, supports transmission range of approx. 10 metres Supports bilateral calls and also allows you to use separately. Intelligent noise cancellation ensures clearer Bluetooth calls. The professional version contains high-frequency iron moving coils for better sound quality. Item name: Bluetooth headphones. Material: silicone Bluetooth version chip: for Ruiqi 8763 Bluetooth Protocol: A2DP1.2 / AVRCP1.0 / HSP1.0 / HFP1.5 Speaker diameter: 10 mm Bluetooth transmission distance: 10 m. Earphone battery: 50mAh (included) Charging case battery: 3000 mAh (included). Music playback time: 3 hours Talk time: 3 hours Charging time: <2 hours. Standby time: 100 hours. Charging interface: Micro USB Type Language Function: Chinese and English Tips Microphone: 100 Hz - 8000 Hz Features: wireless, waterproof, comfortable to wear, stereo sound Length: approx. 80 mm. Width: 53mm (approx) Depth: 30mm (approx) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package includes: 2 x Bluetooth earphones. 1 x charging case.
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