1、EASY OPERATION: Portable switch makes laser leveling operation easier, push up or down to control the laser line, which is convenient and efficient. 2、WIDE ANGLE: Cross line laser design, can easily project a 120° wide angle red cross line, which is suitable for a wide range of applications. 3、COMPACT SIZE: The laser marker is small and lightweight, easy to hold with one hand, and easy to put in a bag or pocket for easy portability. 4、BUILT IN BATTERY: The portable laser leveling has built in 160mAh LR44 button batteries with large capacity, can ensure long term operation. 5、FOR HOME USE: Projects vertical and horizontal laser lines for accurate placement of objects, ideal for hanging mirrors, installing curtain rods, etc. 1 x Laser Marker Item Type: Laser MarkerMaterial: PlasticBattery: LR44 button battery x 3 (built in battery)Capacity: 160mAh (single battery capacity)Usage Scenarios: Suitable for hanging pictures in stairwells, hanging mirrors, installing curtain rods and other household items, can project vertical and horizontal laser lines to place objects accurately.