Nikon 4804 R1 Wireless Close-Up Speedlight System - Manual (Page 12)

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Tips on using the Speedlight
Take trial shots
Take test photos before photographing important events, such as weddings and
graduations.
Have Nikon regularly spot-check your Speedlight
Nikon recommends that you have your Speedlight serviced by an authorized
dealer or service center at least once every two years.
Using your Speedlight correctly
The Nikon Speedlight’s performance has been optimized for use with Nikon
brand cameras and accessories, including lenses.
Camera and accessories made by other manufacturers might not meet Nikon’s
specification criteria, and nonconforming cameras and accessories could
damage the Speedlight’s components. Nikon cannot guarantee the Speedlight’s
performance when used with non-Nikon products.