The SOS F1-SB was released in <missing> and discontinued in ~2008.
The now-discontinued SOS-SB includes the same features as the (also discontinued) SOS F1-ND. In addition, it can locate an SOS "Bug Device" which is attached to skis, a dog collar, a snowmobile, etc. You activate the "bug" search by pressing a recessed button on the bottom of the beacon.
|Owner's Manual:||Read It|
|Pros: An Ortovox F1, plus a dog/snowmobile transmitter.|
|Cons: See the Ortovox F1 "Cons".|