PRECISION FOR EVERY SESSION
Measure water temperature below the floating ice layer and track every session with countdown and count-up timing.
Ends October 31, 2026 · Eastern Time
High-accuracy sensor
Two timer modes
Buzzer + backlightSensor below the surface. Temperature and time above it.
CryoTimer is a high-accuracy, IP67 waterproof floating thermometer with countdown and count-up timing for cold plunges and ice baths. Its sensor sits below the floating ice layer, while the display keeps water temperature and session time in view. A buzzer and backlight signal the end of a countdown.
Accuracy is manufacturer-stated. Water resistance requires correct assembly and sealing; follow the product guide.
SEE IT IN ACTION
From checking the water to timing the session. Watch CryoTimer in a real cold plunge.
PRECISION BY DESIGN
Try a countdown before your next plunge. Rotate CryoTimer, press its five buttons, or switch to Explode to see the construction.
3D is loading…
Interactive demo · simulated temperature
YOUR FIRST TRY
Tap Start / Pause at 00:00 to count up. Tap again to pause.
Tap 1m or 10m to add minutes, then Start. Hold those keys for +1 or +10 seconds.
Tap Reset to clear the timer. Hold it to switch °F / °C.
Tap Power for the backlight. Hold for 1.5 seconds to switch off.
Drag the body to rotate. Press a button without dragging to use it. Explode switches to an inside view; assemble again to resume the controls.
Use the buttons on the 3D model or the controls below. Tap for the first function; hold for 1.5 seconds for the second. Keyboard: Enter to tap, Shift + Enter for the hold function. Drag the body to rotate.
Sound starts with your first device-button press. This demo uses the recorded buzzer and limits countdown-completion audio to 10 seconds.
Not a live sensor or a recommended session protocol. HI / LO use provisional Celsius thresholds from the guide; the printed Fahrenheit values conflict and require confirmation. Hold timing for units/time keys and edge-case behaviour are prototype assumptions.
A SIMPLE WAY IN
Your cold plunge routine starts with the water, not a guess. The submerged sensor measures below the floating display, while the countdown or count-up timer keeps your session easy to follow.
BELOW THE ICE. ABOVE THE GUESSWORK.Place the correctly sealed CryoTimer in your bath. Read the temperature before you enter.
Set a countdown or start at zero to count up. Use a session length appropriate to you and your guidance.
Keep the numbers in view. Pay attention to how you feel, and leave the water whenever you need to.
Adding ice changes the water temperature throughout your preparation. Let it circulate, then check the reading in the water—not just the floating ice layer. CryoTimer brings that reading and your session time together.
A chiller's target setting and the temperature in the bath are different pieces of information. Use CryoTimer as a separate water reading while following your plunge and chiller manufacturer's setup instructions. It measures; it does not control the chiller.
A thermometer does not test water hygiene. Follow your bath manufacturer's cleaning, filtration and water-care instructions. For warm-water tubs, CDC water-care guidance explains why regular treatment and testing matter.
THE PRODUCT, AT A GLANCE
CryoTimer Base combines water-temperature measurement and flexible session timing in a compact floating device.
Product-guide specifications. Correct assembly and sealing are required for water use. See the guide for battery installation, care, and warranty terms.
CLEAR IN EVERY LIGHT
Your water temperature and session time share one LCD. In low light, tap Power to activate the backlight for five seconds—without reaching for a phone.
A completed countdown sounds the buzzer and flashes the display and button backlights. Keep your attention on the session, with an alert when your chosen time is up.
RESEARCH & PRACTICAL GUIDES
Recovery, temperature, timing and safety. Explore the evidence behind cold plunges without turning promising findings into promises.
Sensor position, stated accuracy, display and sealing: compare the features that matter for your cold plunge.
Read the buying guide →TIMERCountdown or count-up, alerts and clear controls. Find out where a dedicated cold plunge timer fits.
Compare timer features →RESEARCHRead the evidence and understand why soreness, performance and muscle growth are different outcomes.
Explore the evidence →BEFORE YOU PLUNGE
Clear answers about the device, your routine, and your purchase.
For a countdown, set the duration with 1m / 1s and 10m / 10s, then press Start / Pause. For count-up timing, press Start at 00:00 without setting a duration. Tap Start again to pause; tap Reset to clear the timer. Both modes display up to 99:59.
The extended body places the temperature sensor beneath the display, in the water rather than at the top face of the device. In an ice bath, let the water circulate and the reading settle before checking it. Temperature can vary around a bath; one reading does not map the entire tub.
Yes: use it as a separate water thermometer and session timer for an ice-filled bath or a chiller-fed plunge, within the device’s confirmed operating limits. It does not control a chiller, cool the water or replace the bath manufacturer’s setup instructions. Confirm the operating range in the final supplied guide before use.
Hold Reset / °C / °F to change units. A short press resets the timer instead. The online model lets you practise both actions before using the device.
A countdown reaching zero sounds the buzzer and flashes the display and button backlights. The guide describes a 60-second alert, followed by one minute of standby before automatic power-off if untouched. The online demo uses the recorded three-pulse buzzer rhythm, with completion audio limited to 10 seconds for comfortable browsing.
CryoTimer has a backlit LCD for low-light use. Press Power to activate the backlight for five seconds. In this demo, button interactions also briefly brighten the neutral-coloured LCD; the final firmware will be checked against the supplied program code.
CryoTimer uses two AAA batteries, included but supplied uninstalled. Follow the user guide for opening, battery orientation, gasket alignment and closing. Check the seal before water use; do not open the device in the bath. Dry it before replacing batteries.
The guide describes cold- and warm-water use. For a hot soak, stay within the device’s operating limits and follow the tub’s instructions. The final temperature range still needs manufacturer confirmation. IP67 water resistance requires correct assembly and sealing. Do not assume compatibility with every hot tub, thermal spring or mineral-water source.
No. It measures water temperature and session time, not cleanliness, disinfectant levels or personal safety. Maintain your water according to the bath manufacturer’s instructions and choose an appropriate routine with qualified guidance. A timer or HI / LO alert does not establish a safe exposure for you.
The manufacturer states sensor accuracy of ±0.2°C / ±0.4°F. CryoTimer displays water temperature on its LCD. The interactive model on this page uses a simulated temperature, not a live reading from a device in your bath.
The box contains one CryoTimer Base, two AAA batteries and a user guide. Select Buy CryoTimer to open our secure Stripe payment page. The device costs $34.99 USD. The Stripe checkout currently shows $6.99 standard US shipping and a $41.98 total before any further checkout adjustments. Review the final total and delivery details before confirming. The guide states a one-year limited manufacturer warranty.
SELECTED CUSTOMER REVIEWS
Customer experiences, in their own words.
Selected excerpts from verified purchases.
“Updates really fast too, especially in the first couple minutes. Buttons feel good and the sound alert is nice.”
“Wasnt expecting much but this thing is actually pretty good. Easy to figure out and feels solid in hand. Had better luck with this one than anything else ive used.”
The two original cards are selected 5-star excerpts, not an overall product rating; purchase verification is provided by their original platform. Website reviews are verified against paid CryoTimer orders and moderated for authenticity, privacy and abuse, not star rating. All ratings are welcome. Send private feedback.
READY FOR YOUR NEXT SESSION
CryoTimer Base
Floating thermometer + session timer
Device $34.99 + standard US shipping $6.99. Stripe currently shows $41.98 total. Review final delivery details and any taxes before confirming.