A trusty, robust and fast scale is probably the best piece of gear to elevate your coffee game. This one ticks all the boxes and a favourite we personally use it on a daily basis.
The Black Mirror Mini is small, light, waterproof, has a off/travel block switch and is chargeable via USB (cable included). It has various modes like auto-tare functions and timers.
You can even use it to bake a cake or other tasty snacks.