 "Canon ST-E3-RT Speedlite Transmitter"@en Transmitter 5743B002 - Studio Depot"@en
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For Speedlite 600EX-RT and 430EX III-RT flashes
Two-way transmission up to 98.4' away
Compact design
8 types of custom functions
E-TTL II flash, manual flash, stroboscopic, auto external flash metering
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 Type  Radio transmissions wireless Speedlite transmitter  Transmission Range  Approx. 98.4 ft (30m) Flash Control  Ratio control: 1:8 - 1:1 - 8:1, power 1/2-stop increments Coverage  Flash coverage: Transmission Angle: 360 degrees all around  Power Source   2x AA/LRG Alkaline Batteries (Ni-MH and Lithium batteries can also be used) Battery Life: Approx. 10 hours continuously when using AA/LR6 alkaline batteries (At a room temperature of 73°F/+23°C) Dimensions   2.65 x 2.42 x 3.05" (67.4 x 61.5 x 77.4 mm)
 "Nikon EN-EL4A Rechargeable Battery"@en " Nikon Battery | Digital SLR Camera Aden "@en Cameras Toronto Canada Store
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                        The high-capacity Nikon EN-EL4A rechargeable Lithium-ion battery (2500 mAh) works for the Nikon D3, D3s, D3x, D2XS digital camera.
It features Lithium technology, which ensures maximum battery life and maximum power. It also features no memory effect, so you can recharge partially drained batteries without reducing performance.
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