It is also a selfie remote for your iPhone camera(Pluto Camera App). The app also has the capability of calculating the DOF, ND filter shutter speed, 500 Rule and Sunrise/Sunset Time. Compatible Devices: iPhone 4s or later, iPad 3 or later, iPad Mini, iPod Touch 5 or later. Features: Intervalometer - Shutter Release: Single, Focus, Hold, Lock, Bulb, Burst, Timer - Timelapse: Start-Delay, Presets, Bulb-Ramping, End Notification - HDR: up to 19 HDR images - Star-trail: multiple long exposure images - Video: recording video without 30 minutes limit - Timer: Take photos/video during certain period each day, infrastructure construction, plants Pluto Sensors - Laser: Delay of only tens of microseconds, Shutter/Flash method - Sound: 1ms fast response, Explosions, Popping balloons, Shutter/Flash method - Light: High/Low trigger - Lightning: Detect lightning strikes, Adjustable sensitivity - PIR: Wildlife, passerby, wave hand to shoot - Droplet: Water drop collision(External Valve Kit required) - Aux: DIY sensors, e.g. Ultrasound sensor - Fusion: Sensor combination Smart Sensors - Sound Trigger: High-speed, Pre-focus - Vibrate or Shake - Motion Detection: Zoom, Front/back Camera, Sensitivity - Distance: GPS trigger - Voice Command: Say “Pluto” - Smile Detection: Selfie Tools - Depth of Field Calculator: DOF, Hyper Focal Distance - Neutral Density Filter Calculator: Exposure time with ND Filter - Solar Calculator: Sunrise and Sunset, Civil Twilight, Count down - Star-scape Rule: Rule 500 for trail-free star sky photos If you have any question, refer to the User Manual and FAQ in app’s settings Menu. If you want to buy a Pluto Trigger or need more information, visit: plutotrigger.com