Identify the few relevant specifications
Choose the measures linked to your actual use instead of treating a longer specification sheet as automatically better.
Check units and conditions
Capacity, dimensions, efficiency, speed and runtime can be reported in different units or under different conditions.
Look for tolerances and ranges
A maximum, typical value and guaranteed minimum are not equivalent claims.
Use the current model document
Product families can change while names stay similar, so match the specification to the exact current model or revision.
General educational information only. Consumer rights, tax treatment, warranty obligations and return remedies vary by seller, product and jurisdiction. Use the actual contract/policy and current official consumer guidance where rights matter.