The Mental Beats Flex Wireless Bluetooth® Earbuds deliver detailed sound reproduction and enhance bass response for the most powerful sound experience. The high powered dynamic speakers with active noise cancellation and HD microphone offer premium performance. Easily accessible in-line controls allow you to select music tracks or take calls while on the go. Earbud Features Bluetooth® Range: 10m (33’) Bluetooth® Version: 3.0 Battery life: talk time up to 3 hours, standby time up to 300 hours Microphone: Yes Controls: In-line Noise Cancelling : Yes Charging port: USB, Micro-USB.