Feature: 1. Bluetooth 5.0 Technology: Bluetooth headset provides fast and stable pairing with any iOS and for Android smartphones, tablets, laptops, MP3 players, up to 33ft away. 2. Clear Sound: Hands free earphones feature advanced built in HD mic to provide crystal clear and natural sound, allowing you to enjoy high quality music and clear calls anytime, anywhere. 3. Function: Supports 1 for 2 connection of 2 devices, freely switch to listen to songs and make calls. Supports real time display of the remaining power of for iPhone, making it more worry free to replenish the power. 4. Hands Free Call: Bluetooth headset with mic supports hands free calling and voice number notification for incoming calls. Voice alerts on battery level, connection status, and even announce the caller's phone number. 5. Comfortable and Convenient: Designed to fit either ear, the retractable earhook and rotatable arm ensure a comfortable fit. It's lightweight and comfortable enough to wear for hours at a time. 6. Long Battery Life: This bluetooth headset offers 8 hours of continuous talk, up to 120 hours of standby time, and requires only 1 hour of fast charging for reliable wireless calls throughout the day. Specification: Item Type: Bluetooth Headset Material: ABS Bluetooth: 5.0 Supported Modes: HSP, HFP, A2DP, AVRCP Transmission Distance: 10m / 33ft Talk Time: Up To 8 Hours Music Time: Up To 8 Hours Standby Time: More Than 120 Hours Charging Time: 1 Hour Charging: Micro USB Charging Voltage: DC5V Sensitivity: 42db±3 (at 1000Hz) Impedance: 32Ω±15% Frequency Range: 20Hz-20KHz Battery: 90mAh Li ion Battery (included) . Package List: 1 x Bluetooth Headset2 x Earplugs1 x Charging Cable1 x Manual