Feature:1. 8 Multifunctional Sanding Heads: Detail sander tool with 8 sading heads: Arc, Right anglr, Spherical, Sledge, Square, Rectangular, Slim and Triangular sanidng head for differnent needs, and ennsures truely stock removal.2. Complete Accessories: Pen sander with a storage box and self adhesive sandper for flat sanding head #180/280/400/600/800/1000/1200 (97pcs)each mesh Pre-cut, Self adhesive sandper for rounded sanding head #180/280/400/600/800/1000/1200 (47pcs)each mesh Pre-cut.3. 3 Speed Adjustable: Mini sander pen with one click operation and 3 speed adjustable:2800rpm/3100rpm/3600rpm. There will colorful light effect after acticated and you can DIY reset your own light effect of each speed.4. Overload Protection- Intelligent IC chip to protict your tool from overloading. Auto shut off will be atived when excessive pressure is detected to save motor and elongate service life.5. Long Lasting Use- Reqires approximately 20 minutes for charging, with real time display for battery level, 100 minutes of duration time is available when fully charged and with empty loading.Specification:Specification:Color: Red and BlackMain Material: ABS + NylonReciprocating action: 2.5±0.1mmHorizontal reciprocating tolerance: ±0.1mmOsilating tolerance(left/right): ±0.1mmBattery capacity: 280mAhOutput current with load: 750mA maxOutput current without load: 250mA maxRated power: 2.8WInput voltage: 5VOutput voltage: 3.7VInput current: 1ACharging time: 20±minWork duration with load: 100±minMax. pressure: 320g/360g/430g(3 speed)Sanding speed: 2800rpm/3100rpm/3600rpm(3 speed)Pen size: 178*21*18mm/7*0.8*0.7inPen weight: 55g/1.9ozPackage List:Packing List:1 * Sanding pen8 * Sanding head12 * Sheet sanding paper1 * Charing cable1 * Storage box