1、With high‑accuracy double blisters, the measurement is more accurate and stable 2、Vertical and horizontal double bubbles can ensure the accuracy and stability of the measurement 3、The level has low power consumption, two batteries can be used for more than half a year 4、Lightweight and portable, wide range of applications, the launch angle can be adjusted 5、High quality material can make sure the durability and stability of the product Item Type: Laser Bubble Level Material: ABS Laser Wavelength: 500nm Line Width: Approx. 0.5 ~ 1cm / 0.2 ~ 0.4in Battery: 2 x AAA batteries(not included) Working Temperature: 0-42℃ Launch Angle: Adjustable Scope of Application: Multi-function 1 x Laser Bubble Level