Technical specifications:

Driver size: 6mm/0.24″ Dynamic DriverPower supply: 5V 1AEarbud: 5.1g per pc (10.2g combined)/0.011 lbs per pc (0.022 lbs combined)Charging case: 47.3g/0.104 lbsEarbud battery type: Lithium-ion polymer(70mA/3.85V)Charging case battery type: Lithium-ionpolymer (750mA/3.7V)Charging time: 2 hrs from emptyMusic playtime with BT on and ANC off:up to 10 hrsMusic playtime with BT on and ANC on:up to 8 hrsFrequency response: 20Hz – 20kHzImpedance: 16 ohmSensitivity: 105dB SPL@1kHzMaximum SPL: 95dBMicrophone sensitivity: -38 dBV/Pa@1kHzBluetooth version: 5.2Bluetooth profile version: A2DP 1.3,AVRCP 1.6, HFP 1.7Bluetooth transmitter frequency range:2.4GHz – 2.4835GHzBluetooth transmitter power: <12dBmBluetooth transmitter modulation:GFSK, π/4-DQPSK, 8-DPSKMaximum operation temperature: 45°C