Wsound 30-Hour Music Time/Talk Time Wireless Bluetooth Headsets Headphones Earphones with Mic and Ear Hooks (Black) 1. 30-hour music time/talk time. Super-long standby time: 45 days. 2.Comfortably fit and soft rubber earbuds. This rubber made earbuds are snug and stays secure in your ear. 3.Bluetooth Version: 4.0. 10 meters transmission range. Dimensions: 66 X 13 X 10MM. It is lightweight and potable. Net weight: 14 g. 4.Multi-function bluetooth headset. A) Voice prompts remind you of any incoming message and call. B) CVC 6.0 noise cancellation technology is applied. Noise reduction microphone and say goodbye to noise disturbance. C) Multi-point connection allows you to pair the headset with 2 cell phones at the same time. D) Compatible with most bluetooth enabled devices. 5.The package includes: bluetooth headset X 1, USB charging cable X 1, ear hook X 1, alternative audio cable X 1, user manual X 1