SunZi PT12301-11 Cordless 12V Variable Speed Lithium-Ion Multi-Tool Oscillating Kit Lithium-Ion Powered. Lithium-Ion enables long runtimes and fade-free power. Lithium-ion batteries will also offer long battery life and long storage life (4x Ni-Cad). Lightweight: Only 1.8 lbs. for Precise Action 0-16,000 OPM Variable Speed, 6 speed settings, Adjustable Dial Accessories: Cutting Blade, Scraping Blade, and (3) Sanding Pads