Bluetooth Earbuds,Magnet Attraction V4.0 Wireless Bluetooth Headphones Earphones Headset In-Ear Headphones Earbuds with Microphone & Stereo for Sports 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. ATEST 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. CVC NOISE REDUCTION 6.0 TECHNOLOGY: with excellent sound effect collection, superior sound isolation, efficiently reduces external noises, and provides steady Bluetooth signal and support stereo lossless music. LONG-LASTING ENJOYMENT OF MUSIC: about 4 hours talking/playing time, 2 hours charging time, 160hours standby with a single charge, so you have less time charging and more time doing.