Frisby Premium Quality Stereo Bluetooth Headphone Headset with Microphone and MicrosSD and TF Audio Inputs for MP3 and WMA 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 7 hours in continues work. Standby time is 200 hours The headset equipped with TF and MicroSD audio inputs that supports MP3 and WMA audio files Operating Distance is 33 ft. Compatible with any bluetooth enabled device including smartphones, Ipads or any tablet or regular PCs has bluetooth feature.