Midland ER310 vs Eton FRX3 (2026): Which Emergency Radio Is Better?

Two red crank radios, both with a solar panel, both with a flashlight, both promising to keep you informed when the power goes out. From across the room they look like cousins. Open the manuals, though, and they turn out to be built for different jobs: one is a long-haul power box, the other a lighter radio with a few clever extras.

Editorial Research & Review

Written by

Lena Thornton, Weather Station Analyst & CWOP Contributor

Review basis

Midland's ER310 owner's manual, Eton's FRX3 owner's manual (2012), Eton's FRX3+ spec sheet (2016) and the current Amazon listings, compared point by point. Every number on this page comes from one of those documents and says which one.

Hands-on testing

Not performed by The-Weather.com for the radios on this page

Research last verified

October 14, 2026

Midland ER310 vs Eton FRX3 at a Glance

Here is what each maker says about its own radio. Where a number comes from a different source, the table tells you.

Sources: Midland ER310 owner's manual and Eton FRX3 owner's manual (copy hosted by Forestry Suppliers). We do not list prices because they change daily: use the buttons to see today's price.

Weather Alerts: Both Listen, Neither Filters by County

Both radios can sit in standby and react when the National Weather Service sends an alert on your local weather channel. That part is equal. How they tell you about it is not.

• Midland ER310: press WX ALERT and the "WX" icon flashes on the screen. When an alert comes in, the radio sounds a siren and the flashlight and backlight flash for one minute. Sleep through it, and a small light keeps blinking every 5 seconds for up to an hour, so you know something happened, according to Midland's manual. Think of it as the radio version of a sticky note on the fridge.
• Eton FRX3: press the Alert button, and when the function is on, the radio automatically plays emergency alerts for your area, according to Eton. The FRX3 manual does not describe an alert memory.

The catch for both: neither has S.A.M.E. (Specific Area Message Encoding). A S.A.M.E. radio only sounds for the counties you program, using the codes on the National Weather Service county list. Without it, a radio cannot tell your county from the next one, so it reacts to alerts for the whole area its transmitter covers. That is fine in a go-bag. On a nightstand, it can mean waking up for a warning two counties away, or switching the alert off out of frustration. For bedroom duty, a desktop S.A.M.E. radio is the better tool; our guide on how to program SAME codes and the SAME code lookup help you set one up.

Battery and Charging: Where the Two Really Differ

This is the biggest difference between the two radios. Midland's current ER310 product page lists a 3500 mAh lithium-ion battery with "up to 45 hours of normal use". Its older owner's manual lists 2600 mAh, so older stock may still have the smaller pack. Eton's FRX3 manual lists a 3.6 V, 600 mAh Ni-MH pack that plays the radio for about 3 to 4 hours at low volume. Even against the older Midland pack, the ER310 battery is more than four times larger on paper (our calculation from the two manuals).

All times are the makers' own figures, and the two makers did not measure them the same way (Eton gives low volume, Midland does not say). Treat them as a rough guide, not as a measured head-to-head result. Real results depend on how fast you crank, how loud you listen and how strong the sun is. A shorter USB charge is not automatically better either: the FRX3 fills a much smaller battery.

What Matters Most During a Long Power Outage?

Two practical notes from the manuals. First, the ER310 turns its radio off while it charges a phone; unplug the phone and the radio works again. Second, Eton warns that cranking with a phone still connected can damage the phone: disconnect it first, crank at two or more turns per second, and wait five seconds before you start cranking again.

Worth knowing: AA batteries are the size you are most likely to find in a drawer, a car or a corner shop after a storm. That makes the ER310's AA backup more than a footnote.

Which Emergency Radio Should You Buy?

Both radios do the basics: AM, FM, the seven NOAA weather channels, a crank, a solar panel and a flashlight. The choice comes down to how long you need it to keep going and what you want it to do in between.

When Neither Is the Right Radio

• You need a radio that wakes you for warnings in your county. Get a desktop alert radio with S.A.M.E. and keep the crank radio in the emergency kit. Many households have both; see our 5 best NOAA weather alert radios.
• You want a radio for the rain. Neither maker sells these as waterproof. Eton's manual says not to expose the FRX3 to rain or moisture, and Midland's warranty excludes water damage. Pack either one in a zip bag.
• You want to compare more crank radios. See Midland ER310 vs ER210, Midland ER310 vs Kaito KA500 and our Eton Quest review.

After You Buy: Five Minutes That Matter

• Charge it fully by USB before it goes in the kit. The crank is for emergencies, not for charging from empty.
• Find your weather channel. Both radios have the seven NOAA frequencies (162.400 to 162.550 MHz); pick the one that sounds clearest.
• Switch the alert function on and test it during the weekly NOAA test broadcast in your area.
• Put spare batteries next to it: 6 AA for the ER310, 3 AAA for the FRX3. Midland advises taking AA batteries out for long storage to prevent leaks.
• Give it a monthly check. Rechargeable batteries slowly lose charge on a shelf, and Eton notes that its rechargeable pack will eventually wear out and can be replaced.

Midland ER310 vs Eton FRX3 FAQ

Update Log

• October 14, 2026: Article written. All specifications checked against Midland's ER310 product page and manual, Eton's FRX3 manual and FRX3+ spec sheet, and the current Amazon listings.

Sources

• Midland: ER310 product page (battery, run time, solar FAQ)
• Midland: ER310 E+Ready emergency crank weather alert radio, owner's manual
• Eton: FRX3 owner's manual, 2012 (copy hosted by Forestry Suppliers)
• Eton: FRX3+ spec sheet, 2016
• National Weather Service: NOAA Weather Radio county coverage and S.A.M.E. codes

See also: Midland ER310 review · Best Emergency Weather Radios · Black Friday Weather Radio Deals · How to Program SAME Codes