Controlled by temperature-stable sensors for auto alignment. All fuctions can be used with remote control.Supper strong black carry case with tenacious buffer material inside. Included a pair of laser goggles, easily view the laser among the strong sunlight. Leveling accuracy: horizontal: ±20; Vertical: ±20. Measuring range: diameter: 500m (Using the laser detector). Light source: laser diode, wavelength: 635nm. Down point diode: accuracy: ±1mm/1.5m. Remote controlling distance: approximately 20m. Hours in continuous use: approximately 6-8hours. DimensionLxWxH: 161×161×184mm / 63.4"x63.4"x72.5. Power supply: DC 4.8-6V(4 section of NI-MH batteries or 4 section of NI-MH rechargeable batteries). 1 X Strong Carrying Case. 1 X Receiver & Handle. 1 X Key Of Carry Case. We have warehouses in the USA, UK, DE and AU. For those customers who live in the US, UK, DE, EU and AU, we will send item from the corresponding warehouse. For those customers who live in other countries, we will send item from our foreign warehouses if available, otherwise from China. E-mails are answered Monday through Saturday. Please allow up to 48 hours for a response to your message 3. The item "Automatic Self-Leveling Rotary Rotating Red Laser Level Kit 500M +Carrying Case" is in sale since Thursday, May 7, 2015. This item is in the category "Business & Industrial\Test, Measurement & Inspection\Levels & Surveying Equipment\Levels & Autolevels\Rotary Lasers". The seller is "star-shopx" and is located in Rowland Heights, California. This item can be shipped to United States.