Color: Black comfortable wearing around-the-neck wearing style with body-contoured fit. Made of medical grade silicone, durable and comfortable, great for jogging, cycling, workout and staying at home or office. 17 Hour battery life with iOS indicator up to 17 hours of music play and 360 hours of standby time on only 2 hours of charging. Excellent HD sound & outstanding appearance design Bluetooth 4.1, apt technology + Cvc6.0, guaranteeing stable and crystal high-fidelity natural stereo sound. IPX5 waterproof & sweat proof wt-911 Bluetooth headphones come with an inner Nano-coating that protects them from moisture. It’s not only sweat that it protects, but also light rain – for those that exercise no matter the weather. Secure headphones with built-in magnets stick both earbuds together with built-in magnets for handy and secure wearing when not in use. Stable & long Bluetooth range Bluetooth range up to 30 feet only in open area brings stable Bluetooth connection, farewell to “tie with the phone”, realizing hands-free convenience. Specifications: Bluetooth standard: V4.1 wireless profile: headset, hands free, A2DP, AVRCP operating range: 10M (33ft) standby time: 360hrs charging time: 2-3hrs talk/playing time: 15-17hrs charging voltage: DC 5V battery capacity: 245mAh/3.7V tips： press the function key to activate Siri within 2 seconds, press 45 seconds to power off. Package includes 1x W1 Bluetooth headphones 1×3 silicone ear-hook – small, medium, large 1x USB charging cable 1x user manual