1. High precision 1/30000, precision and stables 2. Operated by power supply or rechargeable battery 3. Single-point calibration and three-points calibration function for high precision 4. Accumulation function for weight, it is easy to operate 5. WEIGHT HI/LO/OK alarm function, HI/LO/OK setting can be stored 6. Several weighing unit selected and simple counting, percentage calculating function 7. Model LAWH3000: 3000g (capacity) , 0.1g (resolution), 225*308mm(pan size) Model LAWH6000: 6000g (capacity) 0.2g (resolution), 225*308 mm (pan size) Model LAWH15K: 15kg (capacity) 0.5g (resolution), 225*308 mm (pan size) Model LAWH30K: 30kg (capacity) 1g (resolution), 225*308 mm (pan size)