Features:Magnetic damping comoensator to ensure quick self-leveling time.Horizontal and vertical high visibility laser line.With 360 rotary and adjustable base, you can find the best position.Allow the user to project a laser reference line around the room to quickly establish level.Lase line will flash if the ubit is out of self-leveling range.Compact size for easy carrying.Built-in compact locking system to lock the compensator while in transport to avoid vibration.Can be used for indoor and outdoor operation.Perfect for home decoration, installation of the floor, framework, laying of tiles and wall charts,etc.