Color: White note: It is two units fit the earbud. You can wear this Bluetooth headset while you are driving, working or doing sports. It will perfectly fit you ear and won't fall down unless you take it off. And it can connect to most devices, even 2 mobile phone at one time. Features: Wireless version: Dual mode Bluetooth v4.1, ultra low power consumption support agreement: A2dp1.3/hfp1.6/hsp1.2/avrcp1.6/d11.3bluetooth frequency: 2.4ghzbluetooth transmission distance: 12mbattery capacity: 65mahstandby time: About 100hrs if one earbud on,60hrs if both earbuds on continuous working time: Using one earbud:56hrs,using both earbud:45hrsprecautions:1.Please do not overuse this ear phone or put it under heavy pressure, keep away from wet and heat.2.Keep away from Wi-Fi, router or other high frequency transmitting equipment to prevent interruption of signal receiving.3.Please use this earphone under its working range(12 meters)and the effect would be better if there is no obstacle between the connected devices.4.When charging, use a changer that is qualified and charging current is less than 1a to charge it. Package content: Bluetooth headphones USB charging cable user manual.