Wireless Bluetooth Headset 5.1 Earphones Wireless Surround Stereo Strong Earbuds Headset Features: Powerful features: button design, easy to use, phone calls and control music play by button. for in car calling and chatting, or working use. sound: Built-in HD and Sensitivity microphone, the hands free headset is ideal for in car calling and chatting, or working use. This headset owns better cancellation, noise suppression and stable signal Longer music/talk time: the wireless earpiece with built-in rechargeable lithium-poly 50mAh battery, last for 4 hours of audio under 60% volume, 3 hours talk, 1.5-2 hours charging time(Only earpiece) BLUETOOTH 5.0 & EDR TECHNOLOGY- all Bluetooth-enabled devices. Instantly connected to your smartphone or tablet from up to 33 feet away（10M) The two-ear split design allows the ear to be used separately, equivalent to two independent Bluetooth headsets. Specifications: Bluetooth specification:V5.2 Bluetooth chip: 5376T2 Working voltage:3.1V~4.2V Charging voltage:5V-1A Frequency range: 2.402-2.480GHz Battery capacity of the headset: 50MAH Battery capacity of the storage box:350MAH Transmission distance:15M Call time:4h Play time:4-5h Battery life: 120 hours Charging of headset:30-45min Charging of the Charging box:1h Package Included: 1 pair of Bluetooth headsets 1 X Charging box 1 X Charging cable