Olympus OM-system T20 flash unit in makers box in excellent condition.

Main Specifications Olympus T20 flash unit.

A compact and lightweight centralized control auto-flash unit weighing a mere 160 grams, but with outstanding functionality and performance.

Type: Energy-saving series-circuit type TTL centralized control (TTL AUTO)system flash unit. ( with normal auto and Manuel capability.)

Guide Number: 20 (ASA 100 meters ) or 66 (ASA 100feet)

Coverage Angle: 40º vertical 58º horizontal.

Flash duration: 1/40,000- 1/1,000 sec.

Recycling time : 0.2–10 sec with AA alkaline batteries on TTL AUTO and NORMAL AUTO ( varies depending an flash-to-subject distance)

Flashes per set of AA alkaline batteries :  100–500 on TTL AUTO and NORMAL AUTO ( varies depending an flash-to-subject distance)

Tilting angle of flash diffuser window : Down 15  up 90 degrees.

Colour temperature : 5.800 K.

Connection to the camera: 1. On camera clip on via hot shoe.  2.Off camera w/w o Power bounce grip 2 via TTL auto  connector  T4 and TTL auto cord  T0,3m with OM-2n (OM-2) and OM 1-n.

Exposure calculator: Reversible plate-type , blank for OM2-n (OM-2) for TTL auto/Manuel flash  ; calculator for OM1-n (OM1) , OM-10 and non OM cameras for normal auto/Manuel flash.

TTL AUTO (with OM2-n and OM2) :Aperture setting : continuous couples with aperture ring setting of camera lens. SBC sensor acceptance angle : matches view of camera lens .TTL AUTO check : neon flicker indication . Viewfinder indication  contact provided. Ready light check : Charge lamp and viewfinder indication contact.