specifications: Bluetooth: 4.1 wireless
frequency: 2.402-2.480 GHZ
Transmission distance: 10M
battery: 50MA size: 28 * 16 * 15mm
Charging power: AC 110-240V input
charging time: about 2 hours
color: black, white, khaki, pink rose, gold
package size: 5 * 5 * 2cm
the package contains: 1 x Bluetooth Earphone
