[Multi functional laser level] Only one laser level is needed to handle different applications. [Laser Horizontal 360 Line] Laser horizontal 360 self leveling uses an upgraded version of the chip, which can emit a total of 5 laser lines horizontally 360 and vertically 120 , completing over 95% of daily construction and homework projects. [Green diode technology]Our self leveling laser level uses green laser, which is twice as bright as red laser, with the same light source, very accurate and clear, and very stable for indoor use; If you need to use it outdoors, we recommend using laser viewing glasses at dawn, dusk, or cloudy angels to achieve any outdoor precision. Product name: Level instrument Power supply: 2 x AAbatteries (without batteries) Item No.: Level instrument Frequency: 50/60Hz Working distance inside (line): 20-30m Self-Leveling Range: 4Battery Type: Vertical & Horizontal Lasers Precision: +-0.3mm/m Colour:green Material:ABS+rubber coating Package Contents: 1 * level 1 * support 1 * cloth bag 1 * nut Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.