[User Friendly & Various Accessories] This USB fast charging power sander comes with 8 sizes of high quality nylon sanding heads and 12 types of wear self adhesive sandpaper. The sizes and shapes are easy to recognize, and the shapes of sanding heads and precision sandpapers meet the needs of DIY craft enthusiasts [ and Portable & 3 Speed Adjustable] The compact sander is and ergonomically designed for small projects and complex jobs. The portable and compact exterior provides precise control and breezy operation. Featuring 3 speed adjustable design with 2800/3100/3600 strokes per minute, you can get the quickly and smoothly [Safe Overload Protection] This mini reciprocating sander adopts intelligent overload chip to protect the motor at all times, the tool stops automatically when overloaded, preventing the motor loss and prolonging its service life [USB Rapid Charging] The electric sanding pen realizes 20 minutes rapid charging, and the intelligent indicator light provides real time feedback on the battery level. The battery life is about 100 minutes when fully and unloaded[Functional Indicator Lights] Our mini sander has 10 kinds of functional indicator lights freely assigned to meet your different needs Parts List:1 x Body 8 x Grinding 1 Cord 1 x Storage Box 582 x Adhesive-backed sandpaper for flat grinding (#180/280/400/600/800/1000, 97 pcs of each grit) 282 x Adhesive-backed sandpaper for curved grinding (#180/280/400/600/800/1000, 47 pcs of each grit) Product Name: Mini Reciprocating Sander Size: 178x21x18mm Reciprocating stroke: 2.50.1mm Reciprocating level deviation value: 0.1mm Battery specification: 280 mAh Left right swing deviation value: 0.1 mm Load output current: 750 mA Input voltage: 5 vol Maximum no-load output current: 250 mA Output voltage: 3.7 volts Power rating: 2.8 watts Input Current: 1 amp Charging time: 20 minutes No load continuous use time: 100 minutes Note: 1. Do not expose the electric sharpener to high temperatures above 40 C. 2. Children under 14 years old are prohibited from using this product to avoid injury. 3. Do not knock or drop this product to avoid damage and rendering it unusable. 4. Do not cover the operating electric sharpener with any object to good heat dissipation. 5. When not in use for a long time, it needs to be every six months to prevent the lithium battery from over-discharging. 6. Do excessive force to the grinding during grinding to avoid excessive load on the motor. 7. The electric grinding pen has relatively low power and is used for precision grinding and polishing of small parts. It cannot be used for large parts. type parts. Colour:As Shown Material:plastic Package Contents: 1 set x detail sander 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.