PX4 waterproof design, you can use it anytime anywhereCan connect 2 Bluetooth enabled devices at the same timeUpgraded cavities, high audio resolution with fidelity details Bluetooth 4.2 connection, fast and low consumptionHIFI sound quality effect let you have immersive listening experienceMulti-channel design and sealing surface technology, superior sound qualityIntelligent noise reduction for clear music enjoymentOne key touch control, easy operation Triangular silicone earcaps design, stable and comfortable to wearBuilt-in 60mAh large battery, long standby timeSpecification: Material: ABS+TPE+siliconeBluetooth version: V4.2Transmission distance: 10mBattery capacity: 60mAh Talk time: 5 hours Music time: 5 hours Charge time: 1.5 hours Standby time: 120 hours Frequency response range: 20Hz-20KHz