Our micro-sander has a reciprocating mechanism, which makes the sanding process more uniform and stable. This movement ensures that the sanding pen can continue to provide stable sanding when processing details, resulting in a smoother and more uniform sanding effect This USB fast-charging electric sanding pen is equipped with 8 specifications of high-quality sanding heads The size and shape are easy to identify. Various shapes of sanding heads and sandpaper of precisions meet the needs of DIY craft enthusiasts,The versatile detail sander is ,has three-speed adjustment, 2800/3100/3600 times per minute, The charging time is about 20 minutes, can complete the work quickly and smoothly Intelligent overload chip protects motor at all times. The tool automatically stops when it is overloaded to prevent motor loss and extend service life The small for tight spaces, small grinding, polishing, DIY crafts, and the drill bit can be quickly replaced. Whether it is for the detail processing of wood, plastic or metal materials can be used Product name: Cordless sanding pen Reciprocating stroke: 2.50.1mm Reciprocating horizontal deviation: 0.1mm Battery specification: 280 mAh Left and right swing deviation: 0.1mm Maximum load output current: 750 mA Input voltage: 5V Maximum no-load output current: 250 mA Output voltage: 3.7V Rated power: 2.8W Input current: 1A Charging time: 20 minutes No-load continuous use time: 100 minutes Model: ES-A Sanding speed: 2800/3100/3600 times/minutes Use: Suitable for small sanding, polishing, DIY crafts Colour:As Shown Material:plastic Package Contents: 1 x Sander Body 8 x Sanding Heads 97 Pcs x Flat Self-Adhesive Sandpaper: 180/280/400/600/800/1000 47Pcs x Round Self-Adhesive Sandpaper: 180/280/400/600/800/1000 1 x USB Power Cable 1 x Cut- Gloves 1 x Storage Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.