Suit: for all bluetooth device
Technology: bluetooth 4.0
Radio frequency: 2.402-2.480GHz
Audio output: 35mW， <15mA
Transmission range: <10 m
Charging Power: Input AC 110-240V; Output DC 5V
Charging time: 2 hours
Talk time: 4 hours
Music play: 3 hours
Standby time: 120 hours
Wearing styles: In-Ear mini headphones
Battery: 50mA rechargeable lithium battery
Size: 3* 1.8* 1.5cm
Weight: about 8.5g

Instructions:
1 Long time press earphone button more than 5 seconds
2 You will see red and blue light flashing alternately
3 Then connect your bluetooth， and use earphone

Package:
1 x headphone (with box package)
1 x charging cable

pls leave us message the color you want when place order or seed random.Thanks for understand