BT Headphone Wireless Stereo BT 4.1 Headset 3.5mm Wired Earphone MP3 Player FM Radio Hands-free w/ Mic If you want to find a fine quality and multifunctional headset, the Wireless Stereo BT Headset is your perfect choice. The Multifunctional headphone combines the BT, MP3 player and FM Radio function, and supports hands-free function. With this product, you greatly enjoy the wireless music, listen to FM radio, and it also can be worked as a MP3 Player because it supports Memory card. Moreover, don’t worry, if your music players (Such as, MP3 / MP4, etc) have no BT function, you can connect the music players to the headset via the included 3.5mm audio cable to enjoy your favorite music. The leatherette ear cushion can greatly insulate the noise around you, so you can hear your music and call clearly. The over-the-head styling is stable, lightweight and comfortable. Features: 4 in 1 Multifunctional stereo BT Headphone: Wireless Stereo BT + Card MP3 player + FM Radio + Wired Headset function. 3.5mm audio jack, provides a simple wired connection of a variety of music players (Such as, MP3 / MP4, etc) without BT function. Easy to pair with almost any BT-enabled devices. DSP noise cancellation, bring you clear sound effect. Be designed with two speaker and has built-in Mic,, powerful bass system, bring you superior sound effect. Nice choice for listening to music / FM Radio, watching movie, chatting online, etc. Supports hands-free function, conveniently answer the incoming-call during travel. Low power consumption, bring you 8 hours of talking time, 8 hours of music playing time and 120 hours of standby time. Fine quality, foldable design and adjustable headband length, very comfortable to wear and easy to carry. With built-in fine quality rechargeable Li-ion Battery, and easily charged by the included USB cable via computer, etc. Specifications: Color: black+red, black+blue, black, rose gold (optional) BT version: ISSC4.1 + EDR Operation Distance: 10m Transmitting Power: Class 2 Frequency Range: 2.4026 GHz一2.480 GHz Resistance: 32ohm Sensitivity: 105dB+ / - 3dB Rechargeable lithium battery: 300mAh Talking Time: 8 hours Music Playing Time: 10 hours Standby Time: 120 hours  Charge Time: 2-3 hours Plug Type: 3.5mm Audio cable length: 1.2m / 3.94ft Earmuff Diameter: 75mm / 3.1in Main item size (Foldable): 185 * 160 * 75mm / 7.28 * 6.29 * 2.95in Item weight: 163g / 5.76ounce Package size: 165 * 150 * 90mm / 6.5 * 5.9 * 3.5in Package weight: 265g / 9.35ounce Packing List: 1 * Headset 1 * USB Cable 1 * Audio Cable 1 * English User Manual