A60 Open Air Conduction Built-in Microphone Wireless Bluetooth Neckband Earphone 1. Bluetooth version: V5.3 2. Bluetooth distance: 10m 3. Battery capacity: 60mAh 4. Speaker: 14mm 5. Output power: RMSTHD 6. Frequency: 150-18000Hz 7. Material: plastic ABS 8. The connection is more stable, and there is no delay in music, games, calls or movies. It is suitable for indoor and outdoor sports use, providing you with hands-free calls and the ultimate music experience. 9. Open-ear design, HIFI sound quality, achieve high fidelity and clarity, bringing you a wonderful music experience 10. One-button control, easy to use, you can easily use it to playpause, or adjust the next song, or answer calls, it can also be used to activate Siri voice assistant, very convenient 11. Elastic and flexible design, titanium alloy steel wire material, can adapt to different head shapes 12. Long battery life, the headset has a battery indicator light reminder function Packing list: Bluetooth headset x1, USB charging cable x1, Chinese and English manual x1