Product LS-154TG HS-1000TG TS-1200TG Item Code 1075B004AA 1073B010AA 1072B008AA UPC 013803111101 013803111071 013803111088 MSRP 12.95 19.95 24.95 Type Handheld Desktop Desktop Calculation Capacity 12-digit 10-digit 12-digit Power Source Dual Power (Solar & Battery) Dual Power (Solar & Battery) Dual Power (Solar & Battery) Display Type LCD Tilted LCD Tiltable LCD Display Screen Size 2.2*0.8 3.9*1.0 4.5*1.