Certification CE FCC ROHS WEEE Battery display on the case 10mm composite membrane driver element Rich and full sound quality, with great bass Comfort design for ergonomics Materials is ABS+PC Wireless solution is Jerry AC6936D Wireless version is BT 5.0 Transmission distancn is 10m-15m Frequency Response is 2.402GHz-2.480GHz Battery capacity is 30mAh / 300mAh The case of charging times for earbuds is 3times Frequency Response 20Hz-20kHz Playing time is 3h Standby time is 3-4h Charging time is 1h Color is Black/white and support customized
