Features:1)3LED lights color follow the music ups and downs at ear-pad two sides，fashion design. Best sound quality. Clear and transparent bass， mids and highs2)Foldable Headset is easy to carry，adjustable PU leather headband for perfect fit.3)Control your music player directly from the headset with functions such as play， pause， next & previous track， and volume4)Built-in rechargeable Li-battery， 2 hours charging time， play time after full charged:8-10hours5)Compatible with Bluetooth enabled music players & A2DP enabled devices such as iPad， iPhone， iPod touch， Android Smart Phones， tablets， etc6)support TF card，with FM radio function， enjoy the channels you want.Specifications:Bluetooth protocol version: Bluetooth V3.0Transmission Distance: ≥33 ftWireless carrier frequency: 2. 402~2.480MHzSpeaker (Driver diameter):40mmDC Resistance: -90dBSensitivity: -90dBFrequency response: 20HZ-20KHZUSB Interface: 2.0Rated Power:20mWBattery:300mACharging time:2hourPackage:1 x EXCELVAN Bluetooth headset1 x USB cable 1 x Instructions manual