Features:HD Music EnjoymentComfortable Wearing - Ergonomic and flexible in-ear designClear Hands-free Phone CallAdopting advanced Bluetooth V4.2 to ensure the stabilityMagnetic absorption earbuds prevent the headset from falling when walking or doing exercisesWide Compatibility - It is widely compatible with phones, notebook computers, desktop computers, iPad, tablet PC, and other devices with Bluetooth functionSuper Long Playing Time - After being charged to full, this sports headset can play music for 4-5 hoursSpecifications:Rainwater and sweat proof Power display BT Version:4.2 Transmission Range:10M Playing Time:4-5h Built-in Voltage:3.7V Charging Time:2h Standby Time:360h Battery Capacity:90mAhCharge Port: Micro USB Package Included:1 x Bluetooth Headphone1 x USB Charging CablePacked Safely in Bubble Bag.