Edifier W800BT Bluetooth Over the ear Wireless Headphone Quick Specification: Bluetooth 4.0 and wired feature 35-hours of in-use battery 40mm drivers Full Specification: FREQUENCY RESPONSE:20Hz～20kHz BLUETOOTHBluetooth V4.0 IMPEDANCE 32Ω SENSITIVITY:100dB SUPPORTING PROTOCOLHSP HFP A2DP AVRCP CONNECTING DISTANCE10m BATTERY CAPACITY1400mAh rechargeable battery WORKING TIME35 hours STANDBY TIMEabout 800 hours CHARGING TIMEabout 3 hours CHARGING INPUTDC 5.0V=500mA Light Frame The W800BT is a set of impressive wireless headphones. The light weight frame doesn’t weigh heavily on your head making sure you enjoy a full day of listening. Ergonomic Fit Around-the-ear design has a comfortable fit made from breathable high elastic sponge and faux leather cover. The closed back design also helps with reducing outside noise and keeping your sound in. On-ear controls On ear controls let you adjust the volume accordingly. Reach a comfortable level of volume without having to reach for your connecting device. Easily pause and resume audio at a push of a button. Bluetooth Version 4.0 Experience high quality wireless playback with Bluetooth v4.0. Wireless playback working time lasts for 35-hours. Standby time of 800-hours and charge time of 3-hours. Wireless and Wired Connection Use the 3.5mm to 3.5mm connector for change the W800BT to a wired set of headphones. This feature is incredibly useful for when the battery in your headphones is empty. The headphones are charged through an included USB cable. 40mm Drivers The W800BT offers 40mm neodymium magnet drivers that drives amazing bass tones to your ear.