Rotibox always focus on Innovation and Quality. Any query, please contact us freely,we will resolve it ASAP. Specifications: Bluetooth Version: V4.1+EDR Size: one size fits most Material: 100% Acrylic Dimension: 10.2x8.7x1 inch Weight: 3.7 oz Frequency: 2.402GHz-2.480Ghz Transmission Distance: 10m/33feet Battery: 3.7V/120mA li-polymer Play time: 8~10 hours Standby Time: up to 60 hours Charging time: 1~2 hours Speaker Rates: 10mw x 2 Compatible With:For most Bluetooth-enabled devices What's included: 1 X Bluetooth Beanie 1 X Micro USB charge cable 1 X User manual Note: 1.Before you start using the bluetooth beanie,please use the USB cable to charge it first. 2.Pairing:press the ON/OFF button of the control panel,you will see the BLUE-RED light blinking,it will automatically enter pairing mode. 3.Make sure you turned on the bluetooth on your phone,search headset model on it. 4.Select the Bluetooth model and click to connect. Enter the password or code 0000 if needed. Love it, just try it. Rotibox will devote ourselves to making our products meet customers' expectation.