Olympus T18 Flash Unit.

Type: Energy saving series-circuit type TTL centralized control (TTL-Auto) flash unit.

Guide number : 18  (ISO 100 meters.)

Coverage angle : Equivalent to angle of view of 35mm lens.

Flash duration : 1/500 sec.

Number of flashes : 200 or more with AA -size alkaline batteries.(on manual)

Recycle time : Auto 0,2 -7 sec with AA size manganese batteries . Manual  7seconds with AA-alkaline-manganese batteries.

Color temperature: 5600 º Kelvin.

Connection to camera: Mechanical clip-on type via accesoire shoe. Electrical direct contact via hotshoe.

TTL Auto : Aperture settings continuous . Coverage angle , switches automaticly to angle of view of lens used. Working range 2.5–15meters. at ISO 100  F1.2 lens.

TTL-auto check : Neon flicker indication .Viewfinder indication contact provided.

Ready-light-check : Charge lamp and viewfinder indication.

Power source: Two 1.5 volt AA penlight batteries.

Dimensions: 52x90x45mm

Weight : 105 grams.