Brand new and high quality
Illuminated display
Firm body, intelligent
Design for group, macro, long exposures, continuous, motion shooting, etc. 
Energy saving design, can be used for long time

Designed to trigger a camera shutter with regular time intervals, featuring a self-timer, interval timer, long-exposure timer, and exposure-count settings
Timer delay: 0s to 99hrs 59min 59s in 1s increments
Exposure time: 0s to 99hrs 59min 59s in 1s increments
Interval: 0s to 99hrs 59min 59s in 1s increments
Exposure Count: up to a total 399

Works as the camera shutter switch (with halfway or complete button pressing)
Power: 2 AAA batteries

Compatible with Canon TC-80N3
Suitable for:
Canon EOS:
1Ds Mark II, 1Ds Mark III, 1Ds, 1D Mark IV,
1D Mark II, 1D Mark II N, 1D Mark III, 5D Mark II, 1D, 5D, 7D, 50D, 40D,
30D, 20D, 10D, D60, D30, D2000, 1v HS, 1v, 3

NOT suitable for CANON 450 EOS