Brand: Baseus Name: Magnetic Earphone Model: NGCX-02 Material: ABS Range: 7-8 m Talk time: about 4 hours Music time: about 3 hours Standby time: about 100 hours Charging time: about 1,5 hours Battery capacity: 45 mAh Bluetooth: 4.1 Frequency range: 20Hz-20KHz Weight (earphone): 5 g Compatibility: Android/iOS/Windows