1、Advanced Bluetooth Technology: Wireless bluetooth earphone adopts a new generation of V5.3 BR EDR BLE Bluetooth technology version, which has fast transmission, more power saving and fast connection. 2、Superior Sound Quality: The wireless earbuds has natural original sound reproduction, high frequency but not sharp, wide range, transparent human voice, large dynamic bearing, and every music detail is delicate. 3、Noise Reduction and Clear Call: Wireless bluetooth earphone has built in AI smart chip, which automatically processes background noise at high speed according to the environment, making the call clearer. 4、Touch Control: The upper part of the wireless bluetooth earphone is provided with a touch area, through which operations such as receiving and making calls, hanging up and controlling up and down bells can be realized. 5、Ergonomic Design: Wireless bluetooth earphone is designed according to the growth profile of human ears. It does not hurt to wear for a long time and cannot move away. 6、Intelligent Switching Master Slave: Wireless earbuds intelligent identification according to the strength of the signal, the distance and the orientation, bringing a new low delay enjoyment feeling and saying goodbye to the backward people who set up master slave artificially. Item Type: Wireless Earbuds Material: ABS Driver Diameter: Diameter 10mm/0.39in Impedance: 32 Ω Frequency Response: 20Hz-20kHz Sensitvity(S.P.L)≤ 98dB±3dB Bluetooth Version: V5.3 BR EDR BLE Receiver Distance ≤ 10m/32.8ft Play Time: About 5-6 Hours Charging Time: About 1.0 Hours Charging Time of Charging Bin: About 1-2 Hours Built in Polymer Lithium Battery: 300mAh x 1 (Charging Bin), 30mAh x 2 (Earphone) 2 x Wireless Earbuds 1 x Charging Bin 1 x Manual 1 x Charging Cable