In-Ear Headphones - Universal - M3 TWS Wireless Bluetooth Headset Digital Display Bluetooth 5.0 Sport Headset Wireless Stereo Headset Highlights Universal M3 TWS Wireless Bluetooth Headset Digital Display Bluetooth 5.0 Sport Headset Wireless Stereo Headset M3 TWS Wireless Bluetooth Earphone Digital Display Bluetooth Earphone 5.0 Sports Wireless Stereo Ecoutphone The product is shipped according to the color or size of the main image on the product page. Details: 1. Size: 6.2x4x2.7cm 2. Working voltage: 3.3-4.2v 3. Bluetooth version: V5.1+EDR 4. Battery capacity: 50mAh earphone, 280mAh storage compartment 5. Use the time: 3-4 hours 6. Speaker type: 8cm copper moving coil 7. Transmission range: 2.40GH 2.48GH 8. Sensitivity: 98dB+3db 9. Communication distance: effective distance 15 meters 10. Ear entry method: Oblique entry at the ear to fit around the ear Features: 1. Graphene diaphragm, good sound quality, clear call 2. Real-time display LED digital battery box 3. Compatible with Android iOS system, you can connect with Bluetooth 4. Magnetic induction storage bin with delicate texture 5. HIFI sound effect, 5.0+EDR, dual transceiver channels, free switching between the master and the, low power consumption, low delay, digital and digital double noise reduction 6. Avoid accidental touch of physical buttons 7. Intelligent memory association, automatic torque connection after boot 8. Design in-ear, high-definition call 9. The single ear can be used alone, and the two ears can be switched at will 10. Ceramic antenna, stable signal, lossless transmission and reception