Bluetooth in-ear headphones that were designed specifically for use during physical activity with ear hook and secure fit ear-tip design. Thank to the Bluetooth V4.1 Class II technology they provide an operating distance of less than 20 meters and high-quality audio transmission. They feature an in-line microphone case for hands-free communication and battery case for up to 3.5 hours of music playback located on two sides to be balanced when moving. The headphones also support multi-point connectivity for connection of two phones, voice prompt function in four languages (English, Spanish, French, Chinese) and show battery meter when connected to iPhone. They come supplied with one detachment ear hook, USB cable, three pairs of ear-tips (S, M, L), three pair of sport in-ear hooks (S, M, L), cable cinch and carry case. Dimensions: 43.60 x 11.29 x 7.38 mm. Weight: 12.4 g. Black colour design.