Cordless 10 inch Trimmer / Edger by Sunzi 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). 1 Hour Fast Charger Lightweight: Only 4.4 lbs. Easy Use for all your Lawn Needs 90 Degree Head Rotation for String Trimming and Edging with Wheels Telescoping Adjustable Handle Auto Line Feed Spool