Specifications: Color: black, white, beige, p, blue Bluetooth version: V5.3 Wireless distance: about 10 meters (without obstacles) Headset power: left and right 35MAH each Charging compartment power: 350MAH Input: 5V=1A (MAX) Charging time: about 1.5 hours Headset weight: single headset about 1G Weight of charging pod: about 28G Size: 1.65*2.57inch Package Includes: 1pc Bone Conduction Sleep Bluetooth Headset Notes: 1. Due to Different Monitors and Lighting Effects, The Actual Color of the Product May Be Slightly Different from the Color Shown in the Picture. 2. Please Allow Slight Measurement Deviation Due to Manual Measurement.