E-Link Mini Rechargeable Li-on Battery Wireless Stereo Bluetooth Earphone Music Dreaming Headphones Headset For iPhone 5,5S,5C,iPad,iPod, MacBook Air,Sumsung Galaxy S5,S4,Note,HTC One(M8),Mobile Cell Phone Laptop Tablet (White) Minimal earphone, Perfect for Stealth listening/watching at work Usage time: 2.5-3 hours. Charger time:2-3 hours. This Stereo Bluetooth headset additional the noise reduction and echo cancellation for streaming music from your phone or tablet. OTE: Please don't stop pressing the power button until the led light blinks red and blue by turns. Then you can try to connect the headset with phone via bluetooth Only 1''(L) x 1''(W) x 0.3''(H). 25.4mm X 25.4mm X 7mm, light weight and easy to use.