If you're just looking for a set of rechargeable set of scales with a timer and an auto timer option, and you're not interested in spending more for features you may never need, these will probably fit the bill.
Features and Benefits:
• 0.3 to 3000g measuring range
• 0.1g weight increments
• ABS plastic body
• USBC rechargeable
• Size: 3cm tall, 13cm wide, 17cm deep
• Measurements: Grams, ml, oz, lb, lb:oz, fluid oz,
These aren't a small set of scales, they're 30mm tall and have a 17x13cm foot print, so you'll need to measure the drip tray space of your machine if you're using for espresso, and the space you have free under the portafilter.
They don't have a huge battery either, 300mAh, so you'll probably find they need charging more frequently than some of the scales costing from £40 or £50 upwards.
But they're fairly cheap, they're about as fast and as accurate enough as most home baristas will need, they'll do the job & they appear to be fairly sturdy.