I found this one
Dive Alert Scuba Signaling Device Power Whistle Safety System BCD attachment | eBay
The seller says it is both above and below water but I don't think so
For me it is surface only
Anybody knows this type of dive alert?
Thanks
Dive Alert Scuba Signaling Device Power Whistle Safety System BCD attachment | eBay
The seller says it is both above and below water but I don't think so
For me it is surface only
Anybody knows this type of dive alert?
Thanks