Watch with satellite SOS: what each one costs over one and three years

fēnix 9 Pro inReach (47 mm): the one to watch

Price band: under $1,200

Garmin promises a full fēnix that can text home or call for rescue by satellite, with your phone left in the car. The radio side holds up. Of the three routes, this is the one where the watch alone can text home by satellite, with no phone and no phone line behind it.

What it won't be is quick. DC Rainmaker tested a fēnix 9 Pro inReach whose size he didn't state. He needed 20 to 30 seconds to find the satellite and 5 to 10 more to send. All the while, his arm was held out like a man hunting for one bar in a parking garage. After repeated failures, the watch suggests taking it off and turning your back to the sky. He called it "finicky", and still carries an inReach Mini for serious trips. One owner's check-ins sat pending for minutes until LTE was switched off by hand. That's a single report, but it's the wrong kind of story for an SOS button. Garmin's own fine print says the watch's SOS has "important limitations compared to other inReach devices". That is as close as a maker gets to recommending its other product.

Credit Garmin for printing the battery cost. It rates this watch at 32 hours of GPS, and 16 hours with live tracking over LTE. The radio halves your day, in the maker's own words. The 18-day smartwatch figure is harder to recognize. The same tester got about 5 days on a 47 mm Pro inReach whose screen type he didn't state. He ran an hour or two of GPS a day with the screen always on. Owners keep returning theirs over LTE drain. The manual says to set LTE to Auto rather than On, and to send a test message before a trip.

Garmin also said in June that you can suspend the plan and keep up to 12 months of free SOS. That reached us through a UK boating trade body, not the US plans page. Confirm it with Garmin before you count on it.

Wait. Every satellite test so far is on a sibling of unstated size, and no owner has reported a rescue or a timed send. We want a full review of the 47 mm AMOLED model itself. It's a wait on our hiking watch with maps roundup too.

Apple Watch Ultra 4: free satellite SOS, with strings attached

Price band: under $800

Apple promises satellite SOS and satellite texting from the wrist, free for two years. The SOS part is generous and real: it needs no carrier plan. DC Rainmaker, who has used both systems, prefers Apple's low-orbit link to Garmin's. It's quicker and needs less aiming.

The strings come with texting. To tell your partner you're late but fine, the watch needs its own cellular line, $15 a month on Verizon. It also needs an iPhone 14 or later, switched on and connected somewhere. Apple's support pages flag two things for before you leave. Turn on iMessage via satellite. And know that a nearby iPhone in Airplane Mode blocks satellite. That second one will catch someone saving phone battery at camp.

Apple rates it at 18 hours of GPS, and testers' measured drain projects to about 18.6 hours. That's one long day on the trail, not a weekend. Nobody has measured what satellite sends cost in battery on any watch here. And it works only with an iPhone.

Wait. No owner has reported a satellite send with the iPhone left at home, and year three is a blank on the bill. For iPhone owners who want one watch for everything, we set the Ultra 4 against Garmin's running flagship in Apple Watch vs Garmin for running. It's a wait there as well.

fēnix 9 (47 mm) plus an inReach Mini 3: belt and suspenders

Price band: under $1,000

The base fēnix 9 has no LTE and no satellite. On its own it can only ask your phone to call for help. Add an inReach Mini 3 and you get what the watches can't give you: Iridium's global coverage, satellite tracking your family can follow, and an SOS that doesn't depend on aiming your wrist. It's the setup people who know Garmin's watch satellite keep choosing. The tester above carries a Mini. So does one owner of the largest Pro inReach, who calls his watch the third backup.

The catch is that everything doubles. You get two things to charge and carry, an activation fee and no free month. Neither half is measured in our evidence. There's no test of the base 47 mm fēnix 9, and none of the Mini 3, which isn't on our product list, so we give it no price band. The Enduro 4 has no LTE or satellite either, and could be a longer-lasting watch half. It's waiting on a full battery test, as our ultra marathon watch page explains.

Wait for a test of the base 47 mm fēnix 9 before buying the watch half.