... .5V AAAOperating temperature0°C~45°CLaser Wavelength630~650nmPricision of laser level≤±1mm/mPrecision of spirit≤±1mm/mProducts size165mm*30mm*70mm Art ... markers, laser measuring tapes, laser parking instruments and so on. With a wide range, good quality, reasonable prices and stylish designs ... us for future business relationships and mutual success. Laser spirit level with calculator and tape measure