Smiths had an excellent reputation for their clocks, some of which were quite specialised and collectible. This watch is faithful reproduction of the radio room clock pictured below.
SMITHS RADIO ROOM WATCH PRS-28
316L stainless steel, polished finish
Diameter 40mm
Lug to lug height 48.7mm
Thickness 10.35mm to top of the crystal
Lug spacing 20mm
Anti-magnetic 4800 A/m
Water resistance 5ATM/50 metres/165 feet
65 grammes including strap
Screw back, crown guards
White with coloured segments, black printed numbers
If you're not familiar with the purpose of a radio room clock, the coloured segments each span 3 minutes and show the period during which radio silence is observed to listen for distress calls on the international distress frequencies.
The red segments indicate the listening periods for distress calls made with CW (morse code) and the green segments indicate listening periods for voice calls, usually on frequency 2182 kHz although other frequencies are also used.
Supplied in a single-watch travelling case with 24 months guarantee.