MCP Healthcare, Digital Household, and personal health Round shaped Household and personal health weighing scale lens with thick tempered glass and Equipped with high precision strain system and weight measure Units in both KG/LB. should be trying to stand in the middle of the scale for Avoid slip. Stand on the scale in good balance to avoid failure of lock and incorrect illustration and No heavy Knock on the scale. It gives you accurate weight results and when is set after 3 Seconds and automatically switches off after 8 Seconds. Note before putting the scale on the flat and hard surface the scale automatically switches off, you must weight it automatically first. Remove the insulation film put the scale on a hard surface and avoid carpet on a soft surface before weighing the weight. Before using the scale read carefully the Manual User book.