Great Question, as you will want to get a Blipbr that is a suitable size for your asset!
Tip: The bigger the Blipbr is, the longer that battery life!
Here are the sizes:
Blipbr Max 225 mm x 65 mm x 30 mm (excl. mounting tabs) - Weight: 500 grams with batteries
Blipbr 100 mm x 65 mm x 19 mm (excl. mounting tabs) - Weight: 160 grams with batteries
Blipbr Mini 100 mm x 65 mm x 19 mm (excl. mounting tabs) - Weight: 160 grams with batteries