This is a RW-221 / E3 Wireless Shutter Remote. The wireless remote control makes taking group photos easy by allowing you to take pictures away from the camera. Strong interference-resistance capacity， and exhausted power consumption design benefits a longer period of use. Best wireless remote of its class and price range. You&acute;ll get some phenomenal shots of yourself and your family using this wireless remote.                                    Features            Shutter connect cable can be changed to fit for different camera<br>FSK modulation used to improve the reliability and stability of the product， use the free worldwide 2.4GHz frequency<br>Shutter Control: Single-shot， continuous shooting， B gate， 4 seconds delay function<br>Type: Using FSK 2.4GHz Wireless Remote Control System<br>Transmission Distance: 100 meters above<br>Channel: 16 channels<br>Transmitter Standby Time: Over 1 years (using 2 AAA batteries)<br>The Receiver Standby Time: 400 hours (using 2 AAA batteries)<br>                                                            Specifications                        Radio Frequency          2.4 GHz        <br>          Modulation          FSK        <br>          Distance          Up to 100 M        <br>          Channel          16        <br>          Transjrritter Stand-by          3 years        <br>          Receiver Stand-by          300 hours        <br>          Battery Type          2pcs AAA battery (3V)        <br>          Measurement          38mm x 63mm x 31mm / 1.50" x 2.48" x 1.22"        <br>          Transmitter          21.8g (without battery)        <br>          Receiver          32.2 (without battery)        <br>          Cable Unstretched Length          0.28m (0.9ft)        <br>          Cable Max Stretched Length          1.2m (3.9ft)        <br>                                                              Package Includes            1 x Transmitter (RW-221TX)<br>1 x Receiver (RW-221RX)<br>4 x AAA batteries<br>1 x Shutter connecting cable<br>                                                            Extra Info            Compatibility: CANON Powershot G11<br>CANON Powershot G10<br>CANON EOS 1000D (Rebel Xs)<br>CANON EOS 550D (Rebel T2i)<br>CANON EOS 500D (Rebel T1i)<br>CANON EOS 450D (Rebel Xsi)<br>CANON EOS 400D (Rebel Xti)<br>CANON EOS 350D (Rebel Xt)<br>CANON EOS 300D<br>CANON EOS 300<br>CANON EOS 300V<br>CANON EOS 50E<br>CANON EOS 50D<br>CANON EOS 50<br>CANON EOS 33<br>CANON EOS 30<br>Pentax K-7 / K10D / K110D / K100D / K20D / K200D / Cs205<br>Pentax *ist D / DS / DS2 / DL / DL2 / K10<br>Pentax MZ-6， MZ-L， ZX-L<br>Hasselblad H / H1 / H2 / H2D / H1D<br>Contax 645 / Nl / Nx / N / Digital / LA-50<br>Samsung GX-20 GX-10 GX-1L GX-1S<br>