Specifications: Power supply: 5V DC, 50mA Lithium battery capacity: 230mAh Laser line: vertical and horizontal (Cross Lines) Laser color: Red laser / Green laser Wavelength: 650nm / 520nm Laser level: Level 2 Laser range: 9.84ft~32.8ft / 3m-10m Leveling accuracy: 4.5nm Size: 1.54 x 1.54 x 1.52 / 39mm x 39mm x 36mm Features: Mini laser level Bubble design, one-button operation, easy to use, suitable for a variety of scenarios. Built-in rechargeable lithium battery Vertical and horizontal 2 cross laser lines Package Including: 1 x Laser Level Reminder: 1. This laser level has no self Levelling function. 2. During operation, please take care not to expose your eyes to the emitted laser beam. 3. It's best to use it in the case of insufficient light, because the strong light will affect the laser