Product information :
1. Bluetooth version: 5.0
2. Bluetooth call: full duplex
3. Wireless distance: 10 meters/32.81ft and above
4. Frequency range: 2.402GHZ
5. Talk time: 5-6 hours
6. Standby time: 350 hours
6. Receive sensitivity < -80dBm
7. Rechargeable battery: 130 mah
8. Compatible with a variety of high-end and low-end Bluetooth devices including mobile phones, IPAD, laptops, speakers, bracelets, watches, medical equipment