[New Arrival] GRDE Bluetooth 4.1 Stereo On-ear Headphones/Headsets/Earphones,, Elegant Design, Comfortable Wearing, Wired/ Wireless, Support TF Card - The Best Music Partner Bluetooth CRS 4.1 chip adopted, very good machine processing ability, with high fidelity sound transmit technology, echo cancellation and noise reduction, ideal for music listening. With Aux In interface, can be connected to your computer and cell phone like wired headphones. Support 4 Modes: Bluetooth mode -- Switch ON and search B17 to pairing; MP3 mode (TF card) --- Insert TF card will automatically play audio files from the card; FM mode --- Long Press MFBbutton for 1.5 seconds intothe radio mode ; AUX mode --- Without turning insert the 3.5 mm audio cable directly to listen to music. Bluetooth 4.1 and energy saving technology, ensures long working time, 300 hours for standby mode, 8 hours for music, about 8 hours for talking. Support call, answer and redial the last number, very convenient to free your hands when phone call comes in and when you want to dial the last number. Very Elegant Design, good material has been chosen for the ear touching parts, baby skin touching feeling, very comfortable to wear.