Onido Bluetooth Earbuds Headphones Wireless True Wireless Stereo Workout in Ear Earphones with Microphone TWS-81 White

Onido Bluetooth Earphone Headphone Wireless True Wireless Stereo Training Earphone with Microphone Specifications -Battery voltage: 37V -Driver unitdia: 13 mm -Impedance: 32R -Frequency range: 2.402GHz - 2.480GHz -Bluetooth Chipset: 5 -Working Distance: ?10m -Power Consumption :15mW *2 -Frequency Response: 20Hz-8KHz -SNR: ?70dB -Distortion: ?5% -Audio Input: Bluetooth, Phone calling (Double Chanel) -Function: Bluetooth Playing, Bluetooth Phone function, Touch Control -Charging voltage: 5V -Charging current: 800mA - 5V -Playing time: ?Max Vol.?3 Hrs -Material: ABS -Music playtime (h): 3.5h Package Contents -Earphone x 1 pair -Charging case x 1 -Micro USB charging cable x 1 -Earphone cap x 3 pairs (SML) -User manual x 1 piece