PARAMETER: 
<br />Mode: Wireless / Wireless Bluetooth Headset / Hands-free
<br />Appearance Type: In-ear appearance Wireless Headset
<br />Shell Material: PVC
<br />Appearance Process: Green environmental protection
<br />Bluetooth Version: V4.1+EDR+ Compatible V3.0 / V2.1 / V1.1
<br />Bluetooth Effective Distance: About 10M
<br />Sound Channel: Dual Channel Stereo
<br />Transmission Frequency: 2.4GHz
<br />Talk Time: About 7-9h
<br />Standby Time: About 120h
<br />Charging Voltage: 5V DC
<br />Charging Time: 1-2h
<br />Chip: CER4.0 intelligent chip
<br />Support: A2DP HSP HFP
<br />Feature: Music / Voice Control / Call Function
<br />Color: Black / Red / Green / Blue
<br />Warm Tips: 
<br />Continuous use at full volume might damage hearing.
<br />Please pay attention to environmental safety while you are using in walking or cycling.