This is a reciprocating saw, which adopt large power motor for powerful control, 0-3000r/min non-load rotation speed, which can provide stable power output. Easy installation, you can quickly swap out and replace saw bit and battery without using tools. Suitable for cutting wood, iron sheet and plastics. Features: Adopt large power motor for powerful control, 0-3000r/min non-load rotation speed, which can provide stable power output. Easy installation, you can quickly swap out and replace saw bit and battery without using tools. With self-locking function, just press the lock button to lock it. Compact size, light weight and portable, will not feel tired after long time use. Ergonomic anti-skid handle design for comfortable grip during operation. Hollow out heat emission holes design with fine dissipation effect. Support both cut-in cutting and flat sawing, the cut-in cutting suitable for cutting soft material like wood, and the flat sawing suitable for cutting protruding object beside the wall like waterpipe and metal rod. Specifications: Rated power: 250W No-load speed: 0-3000r/min Battery: 1 * 12V, 3900mAh battery (included)