This product has perpetual calendar function which can display year， month， day， hour， minute and second of general clock. It can also display real-time temperature. It's multi-functional for use.  

Features:
Penholder design， can be used as an electronic clock and an ornament on the desk.
1602 LCD display， display the time and temperature， etc.， easier for reading.
Remind temperature and important festivals functions and has wish symbol at ordinary times.
Hourly chime with buzz alarm and purple/yellow LED lights inside the penholder.
In order to keep quiet when in sleeping， the buzz alarm is set between 7:00 to 24:00， only LED light reminds at other times.
Multi-functional in use， it's suitable for electronic enthusiasts.

Specifications:
Micro-controller: STC89C52RC    
Display: 1602 LCD
Crystal Oscillator: 12MHZ， 32.768KHZ
Capacitance: 30pF
LED: Highlight Purple / Yellow
Resistance: 15Ω， 100Ω， 10KΩ， 4.7KΩ
Audion: 9012
Clock Chip: DS1302
Temperature Sensor: DS18B20
Buttery: 1 * 3V Button Battery (NOT included)
Micro-gap Switch: Larger
Board with Hole: 2pcs 5*7， 3pcs 7*9
IC Socket: 40PIN， 8PIN
Package Size: Approx. 13 * 9.5 * 3.5cm / 5.12 * 3.74 * 1.4in
Package Weight: 130g / 4.58oz

Package List:
1 * DIY 1602 Calendar Penholder Electronic Clock Kit