EINSKEY BT-200 Ajustable Bluetooth Metal Gaming Headphone

Specifications:
Bluetooth protocol standards: Bluetooth V2.1 + EDR
Receiver range: 10m \/ 360 
Carrier frequency: 2402MHz-2480MHz
USB interference: High speed USB 2.0
Successive working time: about 10 hours;
Battery: chargeable lithium-ion polymer battery (3.7V \/ 320MA \/ h)
Charger power: computer USB interface DC5V; DC5V (500MA);
Travel charger; DC 5V (500MA) car charger
Frequency response: 20Hz-20KHz
S \/ N ratio: -82db

Package inlcuded:
1 x Headphone