L850 Foldable ENC Noise Reduction Wireless Bluetooth Earphone with Microphone 1. Bluetooth version: V5.1 2. Battery capacity: 400mAh 3. Working hours: 8-12H 4. Standby time: 120h 5. Transmission distance: 10 meters 6. Bluetooth 5.1 chip, high-speed transmission is one step faster, no delay, smoother watching movies and games, and more stable signal 7. RBG lighting effect, dazzling e-sports atmosphere 8. High-fidelity composite diaphragm, better sound quality 9. Lightweight body, comfortable and stress-free to wear 10. Upgraded large battery and low-power smart chip to bring super long battery life experience 11. Foldable design, more flexible for carrying when going out 12. Multiple bending tests, durable, metal arms are more durable 13. Compatible with multiple modes, Bluetooth + SD card + plug-in cable 14. Packing list: Bluetooth headset x1, Type-C charging cable x1, AUX audio cable x1, plug-in microphone x1, Chinese and English manual x1