Bingozones N3 Neckband Bluetooth Headphones wiredless

Version of Bluetooth: V50 + EDR
Transmission Power: Class Il
Effective distance: 10M
Bluetooth Sensitivity: – 85dB
Frequency: 2.4 – 2.4835 GHZ
Battery: 400mAh
Working hours: About 50-60 hours
Charging Time: About 2-3 hours