Features Strong light mode switch button more accurate accuracy higher construction quality Three buttons simple mode of operation more peace of mind use more quickly 110 220V power supply charge you can also charge side with Rotary power switch ieasy to operate Specifications Color YellowMaterials Engineering plasticsSize 125 x 125 x 90mmSupply Voltage 4 2VLithium Battery 3 7VAccuracy 40 Leveling Time 4 5sOperating Temperature 10℃ 40℃Storage Temperature 10℃ 50℃Power Supply AA x 3 Does not include batteries Instructions Press the V light once press H once V off press V once V1 light then press V2 once then press V1 V2 full off over range alarm all laser tube 1S off 0 5S flashing Package Included 1 x Infrared Laser Projection Instrument1 x Base1 x Glasses1 x Cloth1 x AC Power Distribute the adapter according to your country 1 x Power Cable1 x Accessories1 x Box Strap1 x BoxDetail Pictures