Tune after tune after tune 6mm drivers/ closed-back Bluetooth® Black Get up to 100 hours play time or talk time with the case Hit the road with multiple charges in your pocket. Head out with a fully powered charging case, and you get up to 100 hours play time. One charge from the case takes around 1.5 hours, and gives you around 5 hours play time or talk time. Portable charging case with built-in 3350 mAH power bank Never run out of power. The charging case with built-in 3350 mAH power bank doesn't just charge your headphones--it also charges your phone. Simply plug your smart device into the case via the USB port. Soft rubberized wing tips. Secure and comfortable You can rock your sounds in real comfort thanks to the snug-fitting, lightweight design. The soft rubberized wing tips fit securely under the fold of your outer ear. Interchangeable rubber ear-tip covers let you find the perfect in-ear fit-creating a tight seal so you won't miss a beat. 6 mm neodymium acoustic drivers. Great sound, punchy bass The 6 mm neodymium acoustic drivers give you great sound and punchy bass. The oval-shaped acoustic tube maximizes passive noise isolation. Mono mode gives you the option to leave one ear free for when you want to stay aware of the world around you. Smart pairing. Automatically find your Bluetooth device Your headphones are ready to pair the instant you take them out of the case. Once they're paired, the headphones remember the last device they were paired with. Multi-function button. Easily control music and calls Easily control music and calls via the multi-function button. Don't like the current track. Skip it with a long press. Want to reject a call and keep listening. A simple button-press takes care of that. Built-in mic with echo cancellation for clear audio No more of those annoying echoes when you are talking on the phone. With our acoustic echo cancellation, you always get a clear, undisturbed connection.