Love running, love music, get rid of the wires when exercising. Totu bt-2 Bluetooth headphones can handle your , rigorous workouts with its sweat, dust and shock resistance. The ear hook design allows you to , focus on your workout with no worry of fall-off. Comfortable. incorporating the ergonomics design and in-ear design, this Bluetooth headset is extremely , comfortable and secure for the most users: bicyclist, runners, joggers, walkers etc. Super long stand-by time. built-in rechargeable battery lasts up to 160 hours standby time, 7 hours of music time, which makes you do not have to worry your Bluetooth earbuds runs out of energy when , you're enjoying the great outdoor activities. Water-resistant, durable design, totu headphones are protected against sweat and moisture damage by its water-resistant material. It would be a good choice for running, exercising, and biking. CD-quality and superb bass sound, the latest csr chip and apt-x technology will provide you cd-quality and superb bass , sound while you are doing outdoor activities. NFC fast connection . built-in nfc technology for simple and fast connection or disconnection. Easily and quickly paring with your smart mobile phones under the support of Bluetooth 4.1 And in-built nfc chip. Include: totu Bluetooth headphones, micro USB charging cable, S, M, L ear tips, 1 year warranty, user guide , carrying case.