Parameters:

echnology:  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:  30mm * 18mm * 15mm

Weight:  about 8.5g

Package:

1 x phone

1 x manual

1 x charging cable (without charger)