Features: 1.Fast and stable color performance. 2.The sound is clear enough strength. 3.Secant enough strength-fighting the fog toughness. 4.Targeting high-end performance. 5.Lightweight and low vibration, can work a long time without being hand-tired. Descriptions: 1. The short needle handle - light machine 2. with carved handle lock assembly Specifications Material: zinc alloy Working voltage: 3.0-4.2V Fingerprint sensor coverage: 46*76*14MM Unlock speed: within 1 second working period: a year per power Charge Color: gray,silver Battery: 3.7V lithium build in battery Plug type:US plug,EU plug,UK plug,AU plug Notes: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.