Bluetooth Headset, Sweatproof V4.0 Wireless Bluetooth Earphones In-Ear Noise Cancelling Headphones Earbuds with Microphone & Stereo for Running Sports with Magnet Attraction(Golden) ULTRA-LIGHT and ultra-small designed for comfortable and secure wearing. LATEST BLUETOOTH 4.0 TECHNOLOGY: easy and fast pairing with smartphones, tablets and other Bluetooth enabled music devices; Can connect to 2 phones at the same time, and you will not miss any important calls. MAGNET ATTRACTION DESIGN and SWEAT/WATER PROOF: hang like a necklace around your neck, and a 10-meter working distance, our sport headphones will let you enjoy music when running, gym, sports & exercise and other activities. SWEAT-PROOF DESIGN: You can enjoy music while running, jogging or doing other exercise. LONG-LASTING ENJOYMENT OF MUSIC: about 6 hours talking,4 hours playing time,1 hours charging time, 200 hours standby with a single charge, so you have less time charging and more time doing.