2.4GHz Radio Frequency Reduced interference and improved wireless signal quality. Extended Range Up to 320' (100 m) range. 16 Possible Channels One transmitter can trigger multiple receivers. Built-In Antenna Destruction-proof internal antenna. Dual-Function Release Press halfway to focus; press fully to trigger shutter. Delayed Release Four-second delay function gives you extra time to get into position. Multi-Exposure Take multiple shots with one press of the trigger. Long Exposure Control the length of the exposure remotely. Multi-Function Trigger your camera wirelessly or wired. Wired triggering works even if the battery is dead or missing. Versatile One receiver works with dozens of camera models. Just swap out the camera release cable. LED Indicators Confirm pre-focus and exposure during wireless mode. Compatible Cameras Nikon D1 / D1H / D1X / D2 / D3 / D3x / D3s / D2H / D2Hs / D2X / D2Xs / D200 / D 300 / D300s / D700 / D90 / D3100 / D5000 / D7000 / D5100 Fuji S3pro / S5Pro Kodak DCS-14N Power Supply: Transmitter: 2x AAA, Receiver: 2x AAA Battery Life: Transmitter: 3 Years, Receiver: 300 Hours Channels: 16 Range: 320' (100 m) with no obstructions Frequency: 2.4GHz Confirmation LEDs: 2 Color Shutter Modes: Single Shot, 4-Second Delay, Continuous, 1-Second Continuous, & Bulb