Brand: Bluedio 
<br />Color: Black,Blue,Green,Yellow Red
<br />Wearing type: In-Ear 
<br />Function: Answering Phone,Bluetooth,Microphone,Noise Cancelling,Song Switching,Voice control,Sweat-proof
<br />Product Details
<br />Connectivity : Wireless 
<br />Application: Mobile phone,Sport 
<br />Bluetooth transmission frequency: 2.4GHz to 2.48GHz
<br />Bluetooth operating range: up to 33 feet (free space)
<br />Bluetooth profiles: A2DP, AVRCP, HSP, HFP
<br />Frequency response: 20Hz-20,000Hz
<br />Standby time: about 120 hours
<br />Bluetooth music/talk time: about 4 hours
<br />Charging time: about 2 hours
<br />Operating temperature: -10  to 50 
<br />Input voltage/current: 5V/ 0.1A
<br />Output power: 6mW + 6mW
<br />Headphones dimensions: 25*30*21mm
<br />Package dimensions: 108*147*54mm
<br />Headphones weight: 16g
<br />Package weight: 250g 
<br />Extended Function
<br />Bluetooth: Yes 
<br />Bluetooth version: V4.1 
<br />Bluetooth distance: W/O obstacles  10m 
<br />Bluetooth mode: Hands free,Headset
<br />Package Contents: 1 x Headphone, 1 USB Charging Cable, Ear hooks (S, M, L), Eartips (S, M, L), User manual