The camera requires a microSD card in exFAT format, with a speed class of UHS-I V30 or higher. There is no minimum storage capacity specified, but the maximum supported is 1 TB; 128 GB or more is recommended for standard use.

The main difference is that the Adventure Bundle includes additional accessories compared to the Starter Bundle - it's not just an extra SD card. Key details: - The Starter Bundle contains the X4 Air camera, battery (2010 mAh), invisible pole (114 cm) or starter accessories depending on the retailer, USB-C cable and pouch depending on the packs reported by the shops. - The Adventure (or Adventure Bundle) generally includes 'adventure' accessories: an extra battery, lens cap/windscreen, longer pole or waterproof cover and sometimes a memory card (the exact composition varies depending on the retailer) - so there are several additional items for outdoor use. I'm not completely sure of the exact components of the Adventure Bundle for the offer you're looking at, as packs vary between retailers and editions; check the retailer's info sheet or the official product page for the precise list of accessories included.

The dimensions of this action cam are as follows: 46 x 123.6 x 37.6 mm