Evidence, in plain sight.

Every claim has a trail

A specification is attached to its exact variant, source URL, excerpt and retrieval time. Automated extraction creates a candidate claim. An editor checks it before publication. Conflicting claims are retained, including rejected alternatives, in the editorial record.

Reviews are not interchangeable

We distinguish mentions, owner reports, hands-on tests and long-term use. Independence and exact variant match are checked separately. A search snippet is only a discovery lead and never automatically becomes verified review evidence.

Geometry is a useful estimate

Bounding-box volume is width × height × depth, divided by 1,000 for millilitres. It is not usable capacity. Claimed-volume ratio compares stated capacity with that box. Weight per litre uses the stated capacity, not the bounding box.

Our descriptive thresholds are editorial rules: depth up to 30 mm is “very flat”, up to 60 mm is “slim”, and greater depth is “deep”. Bulky-object tolerance describes depth only. It is not a tested packing result.

Availability is regional and dated

Japan listings are explicit offers for JP. Yen pricing or a Japanese brand alone does not prove availability in Japan. Unknown means no approved evidence. Stock can change after a check.

Commercial independence

Commercial links must not change evidence classifications. This MVP does not include advertising or affiliate tracking.