Are you looking for a better way to activate the shutter without disturbing the camera to ensure the image quality? This shutter release is a great camera accessory for you! Ideal for your digital camera， this shutter release allows you to release the shutter when you want to avoid camera vibration or to shoot from a distance. Made of high quality material， it can use for a long time. It is extremely convenient for you to control your camera. An ideal professional camera accessory for you!                                    Features            New and high qualityRemote wireless control， effective remote shutter distance 30m16 unique channel supports multiple user芒鈧劉s environmentStrong interference-resistance capacityWireless bulb shutter and continuous shooting functionLow power needed， long lasting                                                            Specifications            Operating Distance    30M(open space)    <br>Frequency Channel    16    <br>Wireless Frequency    433 MHZ    <br>Power Source    2 x AAA Battery(not included)， 1 x 23A 12V Battery (included)    <br>Battery Life    transmitter can work for about 20，000 times    <br>Receiver Dimensions    2.76\" x 1.14 \"x 0.67\" / 7 x 2.9 x 1.7 cm (L x W x H)    <br>Transmitter Dimensions    2.72\" x 1.18\" x 0.47\" / 6.9 x 3 x 1.2 cm (L x W x H)    <br>Weight    102 g / 3.6 oz     <br>Compatible with    Sony Alpha DSLR-A100， DSLR-A200K; Minolta Maxxum/Dynax/AF 7D， 5D， 9， 7， 4， 3， 807si， 800si， 700si， 600si， 505si， 500si， Sweet， Sweets， 9000， 7000， 5000， Minolta DiMAGE 7Hi， 7i， 7， 5     <br>                                                            Package Includes            1 x Transmitter<br>1 x Receiver<br>1 x 23A 12V Battery<br>1 x User Manual<br>