Hendrix Sport Earbuds showcases comfortable earhook design for comfort and practicality. It's waterproof IPX5 with an ergonomic design that ensures long-term wearing comfort. The smart touch control makes it easy to control music and incoming calls. Specification: Chipset:JL6973 Bluetooth version:V5.3+BR+EDR+BLE Bluetooth decoding: SBC, AAC Bluetooth working frequency:2.402GHz-2.480GHz Frequency response:20Hz-20KHz Speaker size: 13mm Effective distance: 10-15m (in an ideal environment without any large obstacles) Earphones battery capacity: 40mAh Charing case battery capacity:300mAh Playing time:5-6hours Talk time:5hours Earphone charging time: about 1.5 hours Charging times for the headset: about 3 times shipping info: Product packaging size?12.5*15.8*4.6CM Product weight/GW: 87.