... 4. Black 5. Daily alarm and hourly chime Features: - Multifunctional clipboard-Calculator-Display of Month, Date, Day, Hour, Minute, Second-12/ ... first 30 minutes, 1second in following 23 hours 30 minutes-Solar battery- Size: 350.0 x 230.0 x 33. ... one of our mission, we work with customer, communicate with customer and provide OEM & ODM service according to their needs. LEAP TF4301 Clipboard Calculator