Specification: Item Type: Bluetooth Earpiece_x000D_Body Material: ABS_x000D_Product Model: YYK 525_x000D_Bluetooth Version: 5.3_x000D_Wireless Frequency: 2.402GHz-2.480GHz_x000D_Transmission Distance: 10m/32.8ft_x000D_Input Voltage Current: 5V 1A_x000D_Charging Port: Type C_x000D_Talking Time: 10-12 Hours_x000D_Music Playback Time: 10-12 Hours_x000D_Standby Time: 400 Hours_x000D_Earphone Charging Time: About 1.5 Hours_x000D_Charging Time Of Charging Compartment: About 1.5 Hours_x000D_Built In Battery: Lithium Ion Battery_x000D_Headset Battery Capacity: 100mAh_x000D_Charging Compartment Battery Capacity: 500mAh_x000D_Support Protocol: AVRCP, A2DP, HFP, HSP, EDR Features: 1CONVENIENT: Bluetooth earpiece is designed for calls, easy listening and noise reduction. You can free your hands when answering incoming calls, making it easy to talk. Designed for mute function, you can easily turn on the mute mode without taking out your phone. 2STABLE TRANSMISSION: Single ear bluetooth headset uses advanced bluetooth 5.3 to deliver an sound experience with faster transmission speeds, greater connection stability and longer bluetooth range. Can be charged with Type C charging cable. 3INTELLIGENT NOISE CANCELLATION: Wireless handsfree headset features intelligent noise cancellation to give you a clear sound experience. One touch control is smoother and clearer than ever, without worrying about signal loss or music loss. 4LONG STANDBY TIME: Wireless bluetooth earpiece has a built in premium battery that provides up to 12h of continuous talk time in 1.5h on a full charge. The charging case with LED display allows for 400h of ultra long standby time. Small size and easy to carry. 5COMFORTABLE: Bluetooth headset conforms to the shape of the ear to reduce pain and ear fatigue. Headset rotates 180 degree and ear hook rotates 360 degree. Streamlined design based on the ear wire provides a comfortable fit for long hours of wear without fatigue. PackageList: 1 xBluetooth Earpiece 1 x Charging Compartment 1 x USB Charging Cable 1 x Chinese and English Manual