Godox TT520III 433MHz Wireless Triggering Camera Flash Speedlite Light (Black) Features 1. 433MHz Wireless Triggering: The TT520III comes equipped with an integrated 433MHz receiver. When used with the standard RT transmitter, it offers 16-channel wireless triggering, ensuring effortless and reliable flash synchronization. 2. Easy & Precise Power Control:In Manual (M) mode, the TT520III provides 8 power settings adjustable from 1128 to full power in +-13-stop increments, allowing for exquisite control over light and shadow. The all-new display makes it easy to view and adjust settings, enhancing operational efficiency. 3. Bright Output & Quick Recycle: The TT520III boasts a Guide Number of 33(ISO 100, in meters). It delivers up to 400 full-power flashes on NiMH batteries with a recycle time of about 1.8 seconds. The flash duration spans from 1510 to 131000 seconds, ensuring crisp, well-captured images. 4. Flexible Flash Modes: The TT520III offers multiple flash triggering options to suit your shooting needs. Use it as an on-camera flash, trigger it with the RT transmitter, or take advantage of S1S2 optical sync. Additionally, it features a PC sync port for wired control. 5. Adjustable Flash Head: With a rotatable flash head that adjusts horizontally from 0 degree to 330 degree and vertically from 7 degree to 120 degree, the TT520III empowers you to experiment with direct flash and bounce techniques, adding a dynamic edge to your photography. 6. Universal Hotshoe Design:Featuring a single contact hotshoe design, the TT520III is widely compatible with Canon, Sony, Nikon, Fujifilm, Panasonic, Olympus, and other camerasa??ensuring a seamless fit across your gear. Specifications 1. Model: TT520III 2. GN: Approx. 33 (ISO 100, in meters) 3. Photocell: S1S2 4. Vertically Rotatable Flash Angle: -7 degree~120 degree 5. Horizontally Rotatable Flash Angle: 0 degree~330 degree 6. Battery: Four AA NIMH batteries (recommended)LR6 alkaline batteries 7. Flash Duration (t0.1): 1510