This is the unfortunately no longer available McMurdo Pains Wessex Guardian 121.5 MHz
MOB wrist watch system and receiver/alarm. (See pictures below) Includes TWO watches in like-new condition. Also includes instruction booklet and FOUR extra
battery change kits (gaskets, instructions, screws - no
batteries in those kits. Uses standard, readily-available
lithium battery (CR123 or equivalent). (batteries were removed for
storage of course). Watch can be manually activated and automatically activates when immersed in
water. You can read more about the watches here:
Guardian MOB Transmitter
The receiver alerts to any 121.5 MHz signal but is matched to the Guardian watches. You can read more about the receiver here:
Pains Wessex MOB Emergency Receiver
This system
sold for over $600 when it was still available. Will sell it all for $300 including USPS
shipping to U.S.