Timemore Black Mirror Basic Plus, fine scale with timer function
 
Easy to use, slim and reliable: that's it  Timemore  Black Mirror coffee scale. A neat, simple device, without a lot of frills and without Bluetooth. There is, however, an automatic timer. As soon as you start pouring water, the timing begins. The scales also have an LED display and can be charged using a USB-C connection. The surface is waterproof (but the cable connection is not). After five minutes, the scale switches off automatically.