Feature: With Vibrating Alert Function, Let you won't miss any important calls. Easy to wear clip, with function clip, carry your Earphone conveniently on your shirt. Extra long talk / play time, up to 8 hour of talk / play time, and 180 hours of standby time. Pair two phones simultaneously, enjoy the comfort of pairing two phones at the same time. Patented retractable cable technology, after finishing your call, retract your cable with a single push of a buttonbuild-in 30cm cable and the cable is flexible, maximum length is 12inches. Hi-Fi Stereo Sound: DSP double orifice noise reduction technology, ensure Hi-Fi stereo music sound and strong signal,Works with almost any Bluetooth-enabled devices. Specification: Wearing type: In-Ear Function: Bluetooth,Microphone,Noise Cancelling Application: Mobile phone Connecting interface: Micro USB Connectivity: Wireless Driver type: Dynamic Impedance: 32ohms Sound channel: Two-channel stereo Standby time: 80 hours Talk time: 5 hours Music time: 4 hours Bluetooth: Yes Bluetooth distance: W / O obstacles 10m Bluetooth mode: Hands free Bluetooth protocol: A2DP,AVRCP,HFP,HSP Bluetooth Version: V4.1 FM radio: No Radio Frequency: 2.4GHz Charging Voltage:5V Battery Capacity: 80mAh Style:Ear Hook Communication:Wireless Function:For Mobile Phone , HiFi Headphone Plug Type:Wireless Connectors:None Wireless Type:Bluetooth Vocalism Principle:Other Waterproof:Yes Support Apt-x:No Support Memory Card:No Support APP:No Is wireless:Yes With Microphone:Yes Control Button:Yes Volume Control:Yes Active Noise-Cancellation:Yes Package List: 1x Wireless Bluetooth Headset 1 x USB Cable 1 x User Manual 2 x Ear Tips