Size isn’t everything! I wanted a decent quality mini air compressor to carry on the bike and one that was not too big. This Interphone 3000 fits the brief perfectly. What I discovered is that most of these mini pumps are twice the size of this one and the extra capacity mAh batteries may look impressive on spec sheets however this little marvel approaches the Goldilocks zone for me. Also of note is how quiet it is. Fantastic piece of equipment. Case was £2 from B&M Stores.