Headphones:; Adjustable soft headband with soft cushion earcups; Volume control directly on headphones; Built-in rechargeable battery with up to 4 hours music time & 160 hours standby time;Earbuds: ; Built-in rechargeable battery with up to 2.5 hours music time & 120 hours standby time; Clear, rich stereo; Switches seamlessly from music to hands-free calling; Noise reduction; 3.5mm aux & micro USB inputs; Charging time: 2 hours; Includes aux cable & micro USB cable; Blue;