1、Bluetooth 4.1 and One Step Pairing: The latest Bluetooth 4.1 and advanced technology provides faster pairing, stable connectivity, and signal transfer on two Bluetooth earbuds. 2、Automatic Connection: When bluetooth function is turned on, simply take out two earbuds or any earbuds and they will open and connect automatically when turned on. 3、Strong Compatibility: The powerful Bluetooth 5.0 chip is perfect for tablets, laptops and for Android smartphones. 4、Superior Sound Quality: Bluetooth wireless headphones with the latest moving coil speaker, large dynamic drive, HiFi sound quality, deep bass and 3D surround sound, let you as if in a live concert, providing you with real sound. 5、Button Control: The wireless earbuds are controlled by keys to minimize the pressure on the ear when you tap the function keys. 6、Convenient to Use: The Bluetooth sports headset can also raise or lower the volume, backward or forward the song and so on, making it easier for you to listen to music and make phone calls. Item Type: Bluetooth Headset Material: ABS Color: Black Features: Wireless Transmission Range of Application: Most Smart Devices With Bluetooth Bluetooth Version: 4.1 Headset Built In Battery: Polymer Lithium Battery Built In Battery Capacity: 65mAh Bluetooth Transmission Distance: 10m/32.8ft Support Agreement: Compatible for A2DP1. 3 / HFP1.6 HSP1.2 / AVRCP1.6 / DI1.3 2 x Bluetooth Headset 1 x Charging Line 4 x Ear Cap