Frisby Bluetooth Wireless Hands-free Headphone Headset with Built in Microphone and SD and TF Cards Audio Inputs for Mobile Cell Phone Laptop PC Tablet Easily connect to and switch between devices like your PC, tablet and smartphone with a full set of on-ear controls Laser-tuned drivers and a built-in equalizer give you rich digital stereo that immerses you in your music and calls With extended battery life, headset can be used for up to 8 hours in continues work. Standby time is 300 hours The headset equipped with TF and MicroSD audio inputs that supports MP3 and WMA audio files Compatible with any bluetooth enabled device including smartphones, Ipads or any tablet or regular PCs has bluetooth feature.