Found today in Home Bargains, Wythenshawe. Looks like ex-Argos stock with an RRP of £19.99.
Four count-up or count-down timers and time-of-day clock.
Counts up or down to/from 99h 59m 59s with 1 second resolution
Four separate channels, great for tracking multiple tasks
Alarm beeps for 1 minute when countdown reaches zero
DIfferent chimes for each channel
12 or 24 hour time of day clock
Each channel has memory recall of previous countdown time
Flashing indicator (T1-T2-T3-T4) shows active channels
Free standing, spring clip and magnetic mounting options
Powered by 2 LR44 (357) button cell batteries (included)
Size: W 70mm x H 60mm x L 15mm
One year warranty