Feature:1. Support 5.1, take out for automatically on, farewell to complex operations, supporting charging for mobile phone.2. No cable or button, double-click the left earphone to call the voice assistant, more convenient to use.3. The two earbuds can be used together or alone, intelligent fingerprint touch control, universal for Android/IOS.4. Daily life waterproof, sweat proof and dust proof, no need to worry about damage due to sweat.5. Small size and lightweight, delicate curved shape, in line with the human ear structure, free adjustment, comfortable to wear.Specification:Item Type: EarphoneCondition: 100% brand newColor: BlackBluetooth Version: V5.1+EDRWireless Frequency: 2.4GHZSupport Agreement: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3Transmission Distance: Approx. 10m/33ftHeadphone Battery Capacity: 50mAhCharging Voltage/Current: 5V/1APlay/Talk Time: About 4hCharging Time: About 1hStandby Time: 120hCharging BayInput Voltage/Current: 5V/1ABattery Capacity: 2000mAh lithium battery Package List:1 x Charging Bay2 x Earbuds4 x Ear Caps1 x Charging Cable1 x English User Manual