Be more creative in your photography and achieve more in every photoshoot with the Vello Wireless ShutterBoss III Timer Remote for Sony cameras. It boasts a number of functions essential to photography.TIMER FUNCTIONS - Set self-timer delays, long exposure times, and intervals up to 99 hours, 59 minutes, 59 seconds in one-second increments. This is ideal for capturing group photos or star trails.EXPOSURE COUNT - Select anywhere from one to 999 continuous shots or set it to take an unlimited number of exposures.WIRELESS RANGE - Shoot from a distance of up to 250 feet (80 m) and capture candid photos off camera or take pictures of dangerous wildlife without going too close to danger. Wireless through radio frequency (RF) at 2.4 GHzLCD DISPLAY - The four-line backlit LCD panel provides visual reference to your settings as well as activity indicators showing what's currently running on the remote.LONG BATTERY LIFE - Two AAA batteries, in each the transmitter and receiver, support continuous shooting for about 60 days with intervals of 5 minutes and exposures of 4 minutes, 56 seconds. When left on standby, it can last for up to 2 years.COMPATIBILITY: Sony Alpha a58, a77 II, a99 II, a3000, a5000, a6000, a6300, a6500, a7, a7 II, a7R, a7R II, a7R III, a7S, a7S II, a9; DSC-RX1R II, RX10, RX10 II, RX10 III, RX10 IV, RX100 II, RX100 III, RX100 IV, RX100 V, HX50V, HX90V, HX300, HX400, HX400VShutter Modes: Bulb, Continuous, Single ShotReceiver Dimensions: 2.9 x 1.5 x 1.2 inches / 74 x 38 x 31 mmTransmitter Dimensions: 5.9 x 2 x 0.9 inches / 149 x 50 x 24 mmWhat?s in the Box: (1)Transmitter, (1) Receiver, (1) 2.5mm Remote Shutter Release Cable for Select Sony Cameras with Multi-Terminal, (4) AAA Batteries and a 1-Year Limited Warranty