Used only once after purchase and then stored at home. *Product Description* From the official website 【Product Specifications】 Size: 152 x 130mm x 26mm Weight: Approximately 380g Type C USB rechargeable Battery capacity: 1600mAh Weighing range: 0.5g-2000g, Accuracy 0.1g The digital scale is accurate in measurement, with a weighing range of 0.5g to 2000g, and can accurately detect changes of 0.1g. It measures with high precision even when you want to add a little more coffee grounds, and it also measures the exact amount of water being poured during the drip process. Accurately brew coffee and enjoy delicious coffee every day. It is a Type-C USB rechargeable type, so there is no need to purchase or replace batteries.