Product details of TWS I12 M19 Airpods Bluetooth Wireless Earbuds with Mic and Charging Case [Super Bass HD Sound][Latest Bluetooth V5.0 Chip EDR/BLE +Noise Reduction][Barrier Free Transmission + Intelligent Compatibility][Light Weight+ Safe to Wear][Stereo Surround Sound + High-Quality Integrated Audio Chip][Button less + touch Control][Improved Battery Performance]Weight: 100g / full setDisplay: system battery displayLink: You can link two Bluetooth devices at the same timeBluetooth version: V4.2Play music / talk time: about 3-4 hoursStandby time: about 100 hoursBattery Type: Rechargeable Polymer Lithium BatteryFunction: fast charging, high-definition callVoice: can switch between Chinese and English, linked to the state under the press 2 under the boot buttonChip: