Opteka RC-7 Wireless Remote Control for Canon EOS Digital Rebel XT, ELAN 7NE, K2 & T2, Powershot G3, G5, G6, S1 IS Wireless camera operation for digital SLR's and most film cameras Allows for shutter release up to 16 feet Instant or 2-second shutter release delay Battery included, Typical Battery Life - up to 2 years, 10,000 exposures Dimensions: 2 x 1 x 0.2 inches; 3.2 ounces