Three of these seven radios publish a wattage figure

Range is why people buy these radios, and the mileage on the box is the one number you cannot use for comparison. The headline claims cluster tightly — 36 miles for Midland’s GXT1000VP4, 36 miles for the Cobra TrailBlazer 500, 35 miles for Motorola’s T800 (voice) and the T600 H2O (mountain-to-valley), 35+ miles line of sight for the Rocky Talkie, 30 miles for Midland’s LXT600VP3 — and each one describes a different staged condition chosen by a different manufacturer.

Transmit power is comparable, because the FCC sets the tiers rather than the brand. Three radios here publish where they sit: the Rocky Talkie 5 Watt Expedition Radio at 5 W, the BTECH GMRS-PRO at a selectable High 5 W / Mid 3 W / Low 1 W, and the TrailBlazer 500 at 2.5 W. The other four publish mileage and no watts.

The two radios whose classification is not settled

Motorola’s T600 H2O is the more interesting case. The consumer product page says the radio uses “FRS unlicensed frequencies.” The official datasheet lists the frequency band as “FRS/GMRS 462-467 MHz.” Those are not the same statement, no wattage is published to break the tie, and nothing retrieved for this guide resolves it. If your whole reason for buying is to avoid paperwork, that discrepancy is worth reading Motorola’s own pages for before you order.

Cobra is the other. The TrailBlazer 500 publishes 2.5 W, but no license statement appears anywhere retrieved. 47 CFR Part 95 is where that gets settled, not the product page.

The low-end figures matter more than the headline ones

Four of the seven publish a number for something other than a best case, and those are the figures worth planning around.

Midland does it in its own FAQ: normal conditions average about half a mile to 2 miles for the GXT1000VP4, against a 36-mile headline, and half a mile to 1 mile for the LXT600VP3 against 30 miles. Motorola splits the T600 H2O three ways — 35 miles mountain-to-valley, 6 miles open water, 2 miles neighborhood.

Read those across brands and the limits of the whole exercise appear. The radio that publishes 5 W puts mountains at 2 to 8 miles. The radio Motorola describes as FRS, publishing no wattage at all, puts mountain-to-valley at 35 miles. Both numbers come from the manufacturer, neither is measured the same way, and ranking them against each other tells you nothing. Terrain figures are useful inside one brand’s lineup and close to meaningless between brands.

The T800 says only that real-life range can be reduced from maximum. Cobra publishes 36 miles with no qualifier.

Matching the class to the trip

For a family keeping track of each other inside a theme park or a resort village, nothing in this set publishes a measurement taken in a crowded venue. The nearest published figures are Rocky Talkie’s city tier, up to 1.5 miles, and Motorola’s neighborhood tier for the T600 H2O, up to 2 miles.

The code counts differ — 142 on the GXT1000VP4, 121 on five of the others, and 390+ CTCSS/DCS tones with split-tone support on the GMRS-PRO — so settle on a plain channel first and add a code only once everyone can hear everyone else.

Water ratings, batteries, and the things that run out

On power the split is between runtime and refillability. Rocky Talkie publishes 4 to 6 days from a 7.4 V 1800 mAh Li-ion pack, the longest runtime figure in this set, with no AA or AAA fallback in its specifications. The GMRS-PRO carries the largest published capacity but no runtime hours, so there is no way to convert it into a trip plan. Cobra publishes 16 hours, charges over USB-C into the radio, and publishes no capacity figure.

The four that take standard cells are the Midlands and the Motorolas: 4 AA for the GXT1000VP4 and 3 AAA for the LXT600VP3, neither with a published runtime, then 3 AA for up to 26 hours on the T800 and up to 23 hours on the T600 H2O. On their own rechargeable packs the T800 runs up to 16 hours and the T600 H2O up to 9 hours. A radio that takes alkalines can be refilled from a gas-station shelf; one that cannot has to reach an outlet or a USB-C port.

Weather monitoring divides along the same published-versus-vague line. Motorola publishes 11 weather channels with 7 NOAA alert channels on both radios. Cobra publishes 10 NOAA channels with alerts. Midland names NOAA Weather Alert Radio with Weather Scan and says it auto-locks to the local channel, without a count. Rocky Talkie and BTECH both name NOAA alerting without a count.

Small print that changes the order

The Rocky Talkie is sold as a single radio rather than a pair, and its included headset is rated IP56 rather than the radio’s IP67. The TrailBlazer 500 has no channel scan — Cobra’s product page lists Scan: No — and its programming software and 2-way charging dock are separate items.

Two radios publish location features. The T800 shares what3words addresses through the Talkabout app over Bluetooth; the GMRS-PRO has built-in GPS with an onboard compass, location sharing and off-grid texting over GMRS. Both track people carrying radios rather than property, so if the worry is a checked bag instead of a child, a different device class applies.

If you take one habit from this comparison, make it this: open the spec sheet and look for watts. Three makers here tell you. Four would rather talk about miles.