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The Promate InstaScale-50.Black is a handheld digital luggage scale with a 50kg maximum capacity and a 50g division. Readings appear on a backlit LCD and can be shown in either kilograms or pounds. The unit measures 135 x 95 x 30mm and weighs 123g, so it travels inside the bag it measures.
The Promate InstaScale-50.Black is a handheld digital luggage scale with a 50kg maximum capacity and a 50g division. Readings appear on a backlit LCD and can be shown in either kilograms or pounds. The unit measures 135 x 95 x 30mm and weighs 123g, so it travels inside the bag it measures.

Weight is resolved in 50g steps by a high-precision sensor system. That resolution is what separates a useful answer from a vague one: a scale that rounds to the nearest half kilogram cannot tell you whether a case is under an allowance or fractionally over it, which is the only question that matters before a flight.

Weight is resolved in 50g steps by a high-precision sensor system. That resolution is what separates a useful answer from a vague one: a scale that rounds to the nearest half kilogram cannot tell you whether a case is under an allowance or fractionally over it, which is the only question that matters before a flight.

The scale handles loads up to 50kg. Because standard checked allowances sit well below that, you have headroom to weigh an overpacked case, a heavy holdall or two bags hooked onto the strap together, rather than watching the display top out before the bag has even left the floor.
The scale handles loads up to 50kg. Because standard checked allowances sit well below that, you have headroom to weigh an overpacked case, a heavy holdall or two bags hooked onto the strap together, rather than watching the display top out before the bag has even left the floor.


The readout switches between kg and lb. Carriers in different regions quote allowances in different units, and converting in your head at a check-in desk is where errors creep in. Matching the scale to whatever the airline printed on your booking takes the arithmetic out of it completely.

The readout switches between kg and lb. Carriers in different regions quote allowances in different units, and converting in your head at a check-in desk is where errors creep in. Matching the scale to whatever the airline printed on your booking takes the arithmetic out of it completely.

The display is a 23 x 19mm TN LCD with a backlight behind it. Bags get weighed at unhelpful hours and in unhelpful places, typically a dark hallway before an early departure or the boot of a car at night, and an unlit display in those conditions is simply unreadable.
The display is a 23 x 19mm TN LCD with a backlight behind it. Bags get weighed at unhelpful hours and in unhelpful places, typically a dark hallway before an early departure or the boot of a car at night, and an unlit display in those conditions is simply unreadable.


The InstaScale-50 draws 120mW and runs on two CR2032 coin cells rated 6.0V and 210mAh each. Coin cells hold charge in storage for years, which suits a device used only a few times a year, and they are stocked in any supermarket rather than requiring a proprietary replacement pack.

The InstaScale-50 draws 120mW and runs on two CR2032 coin cells rated 6.0V and 210mAh each. Coin cells hold charge in storage for years, which suits a device used only a few times a year, and they are stocked in any supermarket rather than requiring a proprietary replacement pack.

The whole scale weighs 123g in a 135 x 95 x 30mm body, small enough to live permanently in a suitcase pocket. Promate quotes a total usage life of 50,000 weighings, a figure no traveller will approach, so the scale is limited by battery availability rather than by wear.
The whole scale weighs 123g in a 135 x 95 x 30mm body, small enough to live permanently in a suitcase pocket. Promate quotes a total usage life of 50,000 weighings, a figure no traveller will approach, so the scale is limited by battery availability rather than by wear.

Everything you need to know about this product
It measures loads up to a maximum capacity of 50kg.
The sensor reads in 50g divisions, fine enough to tell whether a bag is genuinely under an allowance.
Yes, the display switches between kg and lb to match whichever unit your airline quotes.
Yes, the 23 x 19mm TN LCD has a backlight so it stays readable in poor light.
It takes two CR2032 coin cells, each rated 6.0V and 210mAh, and the scale draws only 120mW.
The unit measures 135 x 95 x 30mm and weighs 123g, small enough to pack in hand luggage.
Promate quotes a total usage figure of 50,000 weighings for the device.
This is the black version of the scale, listed under the model code InstaScale-50.Black.
The 50kg ceiling gives enough headroom to hook two smaller bags onto the strap and weigh them together.
No, it is entirely battery powered from the two CR2032 cells, so it works anywhere.
AI-Generated Content: These FAQs are generated by an automated AI system and may contain inaccuracies or omissions. Evetech makes no warranties, express or implied, regarding their completeness or reliability. For definitive information, please refer to the manufacturer's official specifications.









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