【TTL Flash Compatible with Sony】 NEEWER NW635II-S supports automatic TTL flashes and ±3 levels of exposure compensation for finely adjusting the flash output after TTL calculation. Compatible with Sony A9 II A9 A7R V A7R IV A7 IV A7R III A7S III A7 III A7S II A7R II A7 II A7S A7 A7C A1 A6600 A6500 A6400 A6100 A6000 A99 A350 cameras | 【Lightweight & Powerful Output】 Weighing only 14.1oz (400g), NW635II-S is a potent external on camera flash that is easy to carry. The GN58 guide number (ISO 100, 180mm) ensures powerful flash outputs and a consistent 5600K±200K color temperature-suitable for photographers longing for uniform color in their shots | 【Manual & Stroboscopic Modes】 In the M (Manual) Mode, the output can be adjusted from 1/1 to 1/128 with an increment of 1/3 for precise flash control. The S1/S2 Mode enables the flash to be triggered by other light sources, and the Multi Mode helps you create stroboscopic effects by capturing a sequence of movement | 【Versatile & Quality Flash Effects】 Flash head can swivel up and down between -7° and 90° and rotate 270° for easy flash bouncing. Flash coverage can be adjusted automatically or manually between 24-180mm based on the lens focal length. The included diffuser and reflector create soft lighting. An LCD screen and a PC sync jack are also included | 【Reliable & Lasting Battery Power】 NW635II-S requires 4 AA batteries and is compatible with the CP-E4 compact battery pack (not included) for a stable and enduring power supply. The number of full power flashes is 230. 3.5s short recycle time and 1/300s-1/20000s flash duration let you capture every unforgettable moment