AGS trade; QY7 Mini Lightweight Wireless Stereo Sports Running Gym Bluetooth Earbuds Headphones Headsets for Iphone 6 5s 5c 4s 4, Ipad 2 3 4, Ipod, Android, Samsung Galaxy, Smart Phones Bluetooth: V4.1, the signal strength is nearly twice times than the general Bluetooth headset in the market, High-fidelity stereo music and clear speech High quality materials, lightweight body allows you to wear more comfortable It has built-in high-quality battery playtime to a solid 5 hours Compatible with various brands of Bluetooth phones and Bluetooth notebooks, tablet PCs, MID, etc.