Cable length: 100cm. Release: Half-press for auto-focus, full-press for shutter release. Dimension: 95.5mm (L) X 29.4mm (W) X 20.3mm (H). Weight:45g. Compatibility:Canon EOS 7D, 40D, 30D, 10D, 1D X, 1D Mark IV, 1Ds Mark III, 1D Mark III, 1D Mark II N, 1Ds Mark II, 1D Mark II. Features: 1.Half-press for focus, full-press for shutter, B mode operation; 2.Single/Continuous/‘B’ mode, three shooting modes; 3.Efficiently to prevent shaking and movement; 4.Delicate and perfect design, portable for outdoor shooting; 5.Raised dots anti-skidding design, perfect touch feeling; 6.High-technology material, stable function and quality.