Specification: Item Type: Wireless Bluetooth 5.3 Headset_x000D_Model: OY712_x000D_Material: ABS_x000D_Colour: Black_x000D_Bluetooth Version: BT5.3, Compatible with BT4.2, BR/EDR_x000D_Bluetooth Distance: 10m/0.33_x000D_Compatible Protocol: A2DP /AVRCP/HSP/HFP_x000D_Battery Capacity: 300mAh Built in Lithium Battery_x000D_Audio Range: 20Hz~20KHz_x000D_Snr Sensitivity: 103dB_x000D_Impedance: 32_x000D_Working Voltage: 3.7V~4.5V_x000D_Charging Voltage: 5V 1A_x000D_Charging Time: 3-4 Hours_x000D_Working Time: 40 Hours_x000D_Standby Time: 260 Hours_x000D_Applicable System: For Android, for IOS, for Windows Features: 1Equipped with the most advanced Bluetooth chipset, it can connect with your Bluetooth device quickly and stably. 2This headset is also compatible with 3.5 mm plug cable devices, which is easy to use. 3You can use the included audio cable as a wired headset so that the headset does not lose power. 4The space saving foldable design can be used for study, work, etc. The high quality ear cushions provide you with additional listening comfort. 5The Bluetooth headset provides a high quality built in microphone for hands free calls, so you can get rid of the shackles of wires. 6Compatible with mobile phones, tablets, laptops, smart TVs with Bluetooth functions, etc. PackageList: 1 xHeadphone 1 xUSB Charging Cable 1 x 3.5mm Audio Cable