Pros / This alarm clock automatically syncs to an atomic clock.

Cons / You can’t adjust the screen’s brightness.

 Verdict / This Oregon Scientific alarm clock is missing some important features that the best alarm clocks have, but it is compact and easy to use.

The Oregon Scientific RM313PNFA displays the time, date and temperature on its screen. Because it syncs with an atomic clock, it also always displays the correct time, and you don’t have to adjust it for daylight saving. In addition, it has a projector that can display the time on a wall or the ceiling in your bedroom so you don’t have to roll over to look at the clock when you wake up in the middle of the night.

This alarm clock has a battery backup feature that uses two AA batteries to maintain the correct time during a power outage. However, the alarm doesn’t sound when the clock is running on its backup batteries.

It only has one alarm tone: a buzzer. It’s a progressive buzzer that starts out quiet and slowly builds to a maximum volume of 59.2 dB, which is about as loud as a normal conversation. We tested the maximum volume with a decibel meter placed 2 feet away from the clock – if you have a hard time waking to quiet tones, you may want to place this clock closer to you. However, keep in mind that the screen brightness is not adjustable, so it may disrupt your sleep if it’s too close.

The RM313PNFA performed well in our durability tests. It showed no signs of functional damage and didn’t incur any serious cosmetic damage after falling onto carpet, hardwood and tile floors. However, it is very compact and light, so it’s easy to knock off your nightstand when you fumble around to turn off the alarm. The snooze button is easy to find on the top panel, and it worked perfectly, even after we pressed it more than 100 times.

This Oregon Scientific model’s compact design makes it a good alarm clock for someone who travels. If you want to wake up to the same tone every morning, no matter where you are, you can set it up in your hotel room. If you travel with it, you also won’t have to rummage around to find the right buttons on an unfamiliar alarm clock.

Oregon Scientific only includes a 90-day warranty, which is well below the one-year average for our test group. If you need to contact the company, its website lists phone and email support information. You can also talk to a customer service representative using the live chat feature on its website.

Oregon Scientific RM313PNFA Visit Site
  • Maximum Volume
  1. This is the loudest tone the clock can create measured at 2 feet away.
    Louder is Better.
  2. 7  Oregon Scientific
    59.2 dB
  3. 85.6 dB
  4. 73.4 dB
  5. 86.5 dB
  6. Category Average
    70.85 dB


The Oregon Scientific RM313PNFA projects the time onto the ceiling, which makes it easy to see when you wake up in the middle of the night. The clock’s large display also shows the date, indoor temperature and time. While it only has basic features, the RM313PNFA is compact and easy to use, and it is a good option if you want to take your alarm clock with you when you travel.

Oregon Scientific RM313PNFA Visit Site

Specifications and Benchmarks


Maximum Volume (decibels)
Daylight Savings Time
Brightness Control
Automatic Sync Time
Weekday or Weekend Mode

Help & Support

90 Days
Live Chat

Convenience Features

Adjustable Snooze Time
Bluetooth Compatible
Auxiliary Input (3.5mm)
Sleep Timer


Battery Backup
2 AA
Power Failure Alarm
USB Charger

Alarm Options

Dual Alarms
Progressive Alarm
Radio Alarm
Bluetooth Alarm
Sunrise Simulation