Opteka RC-7 Wireless Remote Control for Nikon SLR D40, D40x, D50, D60, D70, D70s, D80 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