The tape measure has a buckle design, which can fix the measuring scale. There are two specifications for laser measurement, 30 meters and 40 meters. The measurement accuracy can reach 0.001 meters, accurate measurement. The tape measure hook has a compensation design, and the hook amount and the top amount can be accurately measured. Laser distance measurement and tape measure are two-in-one, and it has two functions of tape measure and laser measurement at the same time. Material: ABS Battery capacity: 300mA Product size: 7*7.5*3.5cm Laser measuring length: 30m/40m Length of tape measure: 5 meters Package Weight: 290g Package Dimension: 12,4cm x 13,4 x 5,1 (L x H x W)