TWS-A1 TWS Bluetooth 5.0 Mini Invisible Sports Music Earphone with Charging Box & Microphone (Black) Features: 1. Mini Small Size: Ergonomic design, oblique angle into the ear, depth fit the ear canal, make the ear more comfortable, more suitable for the headset to wear firmly. 2. Exquisite Appearance: The body uses high-grade matte UV technology, luxury and low-key. The lightweight cavity design is unique in that it uses high-grade cool black and simple white, and its small size can also be full of personality. 3. Bluetooth 5.0 power consumption is lower, the transmission speed is faster; the sound is almost zero delay, has stronger anti-interference ability, the signal is stable and calm to meet the needs of your game. 4. Wide Compatibility: Fully compatible with all brands of equipment on the market, whether it is a tablet or a mobile phone, as long as the device has Bluetooth function, it can be matched and connected, not limited to models and systems. 5. 360 ° Surround Stereo Sound: Cinema-quality sound, increase the sound of the sense of presence and space, showing 360 ° stereo surround sound. 6. Binaural Separation Design: The use of true wireless binaural separation design, let you experience more stereo surround sound. It can also be used separately when needed. The two headphones are connected to two devices to adapt to various working scenarios. 7. Mini Magnetic Charging Bin: 400 mAh charging storage bin, 50 mAh headset battery capacity charging 1 hour, listening to songs 5 ??hours can achieve 4 life. 8. Automatic Pairing at Boot: The first time you need to search for Bluetooth on your phone for manual pairing. You can achieve automatic pairing later, no need to find matching again. Parameter: Bluetooth version: 5.0 Use distance: 10m32.81ft (accessibility condition) Microphone sensitivity: 4013±42dB Speaker sensitivity: 97dB Maximum input power: 5mW Impedance: 16Ω Speaker: 10mm0.39in Charging position: about 4 times Headphone battery capacity: 50mAh Charging battery capacity: 400mAh <b