4V, Lithium-Ion, Variable Speed Cordless Rotary Tool, Quick & Easy Accessory Changes, USB Rechargeable Battery, LED Battery Life Indicator, Portable & Lightweight, Can Be Used With Most Dremel Accessories & A Selection Of Attachments, Includes 1/16" Engraving Cutter, 3/8" Aluminum Oxide Grinding Stone, 3/8" Brush Wheel, 1/2" Polished Wheel, Polishing Compound, 1/2" Sanding Brand & Mandrel, Screw Mandrel, Wrench, Accessory Case, Universal Micro USB Cord, 3.6V USB Wall Plug Power Supply, Manual & Quick Start Guide.