I am an Chinese seller,providing customers with high-quality and low-cost products. The types of products we sell include Home & Kitchen,Health & Beauty,Fashion Clothing,Electronics,Watches & Jewelry,and so on. We keep up with the most popular fashion trends. If you like our products, please follow us and become our followers and fans. Sincerely at your service .Please feel free to contact us if you have any questions.Specifications:Built-in magnets let you attach the two headphones together when not using, and wear like a necklace around your neck, a convenient way to carry around when you dont need them.Ergonomic in-ear headphones design to specifically fit the contours of your ears, and a 10-meter working distance, let you enjoy music when running, gym, sports & exercise and other activities.Bluetooth 4.2 technology, easy and fast pairing with phones, tablets and other Bluetooth enabled music devices and providing high quality stereo sound.Compatible with 99% mobile phone, tablet, Bluetooth-enabled laptop and other digital devices on the market.Support automatic back reconnect, intelligent English voice prompt. Type: Bluetooth EarphoneBluetooth Version: Bluetooth V4.2Battery Capacity: 75mAhCharging Time: 1.5 HoursTalk Time: 3-4 hoursMusic Time: ≥5 hoursStandby Time: ≥60 hoursCharging Input: DC-5V/1ABluetooth Frequency: 2.402GHz-2.480GHzBluetooth Distance ≤10mNotes: Due to the light and screen setting difference, the items color may be slightly different from the pictures.Package Includes:1 x Bluetooth Earphone2 Pairs of Earbud Caps(Different Size)1 x USB Charging Cable1 x User Manual