Push button to open! Instructions: 1. Press B1 once, display alternating time and date. 2. Press B1 twice, then press B2 to set. 3. Press B1 three times to date, then press B2 to set. 4. Press B1 four times for hours, then press B2 to set. 5. Press B1 five times to minute, then press B2 to set. Press B1 to see hours, date, and seconds alternatively.