DAISO Calculator Memo Pad A popular product from Daiso. 12-digit calculator + 4.5-inch electronic memo pad Opened size: Approximately 150mm wide x 130mm long x 7mm thick I haven't used it much since I bought it, so it's in good condition. I think it's convenient for students' studies, household finances, investments, and calculations of all kinds. Instant purchase OK! Ships within 24 hours!