Automatic Insulated Gate Bipolar Transistor (IGBT) and series circuitry

Camera's sync modes: slow sync, red-eye reduction slow sync, front-curtain sync, rear-curtain sync, rear-curtain slow sync Photography functions: auto FP high-speed sync, FV lock, red-eye reduction

34/111.5 (ISO 100, m/ft), 48/157.5 (ISO 200, m/ft)

0.6 m to 20 m (2 ft to 66 ft) (varies depending on camera's image area setting, illumination pattern, ISO sensitivity, zoom head position, and lens aperture in use)

Approx. 2.3 sec. with NiMH or alkaline batteries, 4.0 s with lithium batteries

Approx. 510 g (18 oz) (with four 1.5 V LR6 (AA-size) alkaline batteries) Approx. 420 g (14.8 oz) (Speedlight only)

ISO sensitivity manual setting, redisplay of underexposure amount from insufficient flash output in i-TTL mode, reset to the default settings, key lock, thermal cut-out, firmware update

Approx. 78.5 x 145 x 113 mm (3.1 x 5.7 x 4.4 in.)

Use four AA-size batteries of the same brand from any of the following types: 1.5 V LR6 (AA-size) alkaline batteries 1.5 V FR6 (AA-size) lithium batteries 1.2 V HR6 (AA-size) rechargeable Ni-MH batteries

Speedlight Stand AS-21, Nikon Diffusion Dome SW-13H, Fluorescent Filter SZ-2FL, Incandescent Filter SZ-2TN, Soft Case SS-910

These performance specifications are applicable when fresh batteries are used at normal temperatures (20 °C/68 °F).