SwitchBot K11+ buying guide: is the compact body enough?

Bottom line: the SwitchBot K11+ is for buyers in Japan who prioritize a small footprint over maximum coverage. The body is described as 24.8 cm in diameter and about 2.3 kg, and the base station occupies roughly 24 x 18 cm, close to A4 size [S1]. Decide whether that compact setup plus a 4L antibacterial paper bag and disposable-sheet mopping fits your home. Who it fits: people who want a robot that can enter gaps under furniture and around dining-table legs, want less frequent bin emptying, and plan to use Alexa, Siri, Google or Matter-linked platforms. The manufacturer states up to 6,000Pa suction and 45dB or lower in quiet mode [S1]. Who should skip it: buyers who value runtime and large-area coverage above compactness, or who expect a refillable water tank or a washable mop. Mopping is described as using commercially available disposable cleaning sheets; no water tank is stated [S1]. Limitations: suction, noise, mapping accuracy and the claim of emptying the bag as infrequently as about every 90 days are manufacturer statements, not independently confirmed here. Bag life varies with environment, cleaning frequency and waste volume [S1]. Supported surfaces are hard floor, wood floor, short-pile carpet and tile [S1]. What remains unverified for a purchase in Japan: paper-bag model numbers, availability and running cost; battery runtime and charging time; body height; warranty length and domestic support channels; Japanese-language app and manual support; and any hub or firmware conditions for Matter. The relationship between the listed list price and current price cannot be judged from the supplied material.