Harmonics 208 high fidelity stereo wireless headphones with a decent bass and mid-frequency response. Music is food of the soul. Surround yourselves in incredible audio experience – weather you are on a long trip or out for a morning jog or you are simply laying around on YouTube or Netflix on a relaxed weekend. Monster Harmonics 208 has 110mAh high quality inbuilt rechargeable battery with charging time of only 2 hours. Charging cable comes in the package. Efficient and Fast Wireless Operation:- It uses power efficient Bluetooth 4.1 BLE low energy which does not drain the battery quickly. The switch between calls and music is seamless and fast. It connects with devices within just 0.3 second and works for up to a 10m / 33-feet range. Harmonics 208 can connect with two devices simultaneously with ease. Get Longest Playtime:- Harmonics 208 provides an extraordinary 7-hours talk/play time with 210 hours of standby on a single charge. These are the best playtimes available for wireless headphones in this category. Key Features:- Easy controls button allows you to control music and calls effortlessly and accurately with one-touch controls. Enhanced Noise Cancellation:- This wireless headphone has strong magnetic speaker with Acoustic Echo Reduction technology which reduces the background noise during phone calls which does not irritate you in your conversations. High Quality Sound:- Harmonics 208 that can be used both for both making and receiving phone calls from any Bluetooth enabled smartphone and for listening to clear high quality stereo music from paired mobile phones. Multi Point Connectivity:- Harmonics 208 can connect with two devices simultaneously with ease.