Product weight: 49g / set<br>Product gross volume: 123g / sets (with packaging)<br>Product Standard: Host 2 + 1 charging box + 1 charging line + English manual 1 package + packaging<br> <br>Packaging specifications: 100 * 100 * 35mm<br>Link: You can link two Bluetooth devices at the same time<br>Bluetooth version: V4.2<br>Play music / talk time: about 3-4 hours<br>Standby time: about 120 hours<br>Battery type: rechargeable lithium polymer battery<br>Features: Apple Android Universal， fast charging， high-definition call<br>Chip: Jerry chips<br>Shipping configuration: 2 i7 TWS wireless Bluetooth headset， charging cable， manual in English， world cover packaging， charging seat<br>Display: Apple ISO system battery display<br>Link: You can link two Bluetooth devices at the same time<br>Charging stand: 1000 mA， for headphone charger 8-10 times!<br> <br>Pairing mode: long press the boot blue light flash is the normal pairing mode， boot does not release continue to press the three seconds to red and blue lights alternately flashing， then tone the sound pairing， and then enter the binaural pairing state. After the success of the pair of ears blue flashing slowly.<br>Key functions: Long press the boot， long press the shutdown， click the music pause / play / incoming calls / hang up the phone， double-click the next song.<br>Charging instructions: Headphone charging indicator: headset charging red light， the battery is full， the red light goes out.<br>Charging box charging instructions:<br>1. Charging box to charge the headset: The green LED on the charging box flashes， the green LED goes out after the headphone is full.<br>2. When charging the charging box: The green LED on the charging box is flashing， and the green LED is on after the charging box is full.