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 UltraMax 224 mm x 91 mm x 41 mm (incl. mounting tabs) - Weight: 443 grams with batteries
Blipbr 100 mm x 65 mm x 19 mm (excl. mounting tabs) - Weight: 160 grams with batteries
Blipbr Mini 85 mm x 63 mm x 24 mm (excl. mounting tabs) - Weight: 160 grams with batteries