Dremel 7700-1/15 MultiPro 7.2-Volt Cordless Rotary Tool Kit The product is 7.2V CDLS Rotary Tool Battery Chemistry: Nickel-Cadmium (NiCd) Two speeds 10,000 and 20,000 rpm to match the proper speed required Removable 7.2-Volt Ni-Cad battery pack lets you use additional packs for continuous use 3-hour charger with LED light shows proper charging Compact and lightweight for easier handling and less fatigue Includes 15 genuine Dremel accessories