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SANDIT vs a smartwatch.

Your watch can already track a session. So why wear a separate sensor?

Join the Founders ClubSee the kitesurf tracker

Last checked: October 2026

Wet SANDIT Sensor hanging on its cord from a post on the beach

Side by side.

SANDIT

On your chest

Apple Watch

On your wrist

Garmin

On your wrist

High-speed water

Sealed for saltwater, sand and crashes

Ultra only, per Apple

From 10 ATM, per Garmin

Jump height

Built in, measured at your chest

Via apps, at your wrist

Via apps, at your wrist

Sport metrics

Kite, wing, windsurf and surf

Depends on the app

Built-in profiles, plus apps

Live data

After the session

On your wrist

On your wrist

Everyday use

Watersports only

Full smartwatch

Full sports watch

Availability

Pre-order, ships Q4 2026

Available now

Available now

From Apple and Garmin specs and manuals, checked October 2026.

Wrist or chest

Your wrist moves with the bar.

Steering and pumping move the watch, too. WOO calls its watch figure an estimated jump height. SANDIT sits at your chest.

How jump height is measured
Rider wearing the SANDIT Sensor on its neck cord over a wetsuit

Battery with GPS on.

On paper, the watches last longer. SANDIT’s battery is only used for riding.

8+ h

10 h

18 h

47 h

SANDIT

Sensor

Series 12

Apple Watch

Ultra 4

Apple Watch

fēnix 8

Garmin

Maximums: Apple’s outdoor run test, Garmin’s GPS-only mode (fēnix 8 AMOLED, 47 mm).

What it costs.

Own a water-rated watch? Then tracking costs an app at most. Buying one costs more.

SANDIT · first year, sensor included

€83,88

SANDIT · three years

€251,64

Garmin Forerunner 70 · 5 ATM

€299,99

Apple Watch Series 12 · from

€449

Apple Watch Ultra 4 · from

€899

Garmin fēnix 9 Pro · 10 ATM

€1.099,99

Dutch store prices, before any app. Hoolan is free; Surfr watch recording is €24,99 or €54,99 a year.

Which one is for you?

Many riders wear both: a watch for live numbers, SANDIT for the session data.

Keep your watch if

You want live numbers.

  • You own an Apple Watch Ultra or 10 ATM Garmin
  • You want speed or height on your wrist
  • One device for sport, health and messages
  • You live outside the EU, UK or Switzerland

Pick SANDIT if

You want data from your chest.

  • You would only buy a watch for the water
  • Measured from the same spot, every session
  • Metrics for kite, wing, windsurf and surf
Join the Founders Club

Keep the watch for the rest of life.

€6,99 a month for founders, sensor included. Nothing to pay until it ships.

Join the Founders ClubWhat the Founders Club costs
The SANDIT Sensor on its cord

Questions

Can I use an Apple Watch for kitesurfing?

Many riders do, with apps such as WOO, Surfr or Hoolan. Check the model first: Apple says only Apple Watch Ultra should be used for water skiing or other high-velocity water. Other models are meant for shallow water, like swimming.

Is a Garmin watch good for kitesurfing and wingfoiling?

It can be. Watches such as the fēnix 8 have Kiteboard, Windsurf and Surf profiles, long GPS battery life and Connect IQ apps for jumps. Pick 10 ATM or higher: Garmin only lists high-speed water sports from there.

Can a smartwatch measure jump height?

Yes, through apps, but your wrist also moves with your arm while you steer. WOO calls the figure from its watch app an estimated jump height. SANDIT is worn on your chest, under the wetsuit.

How long does a smartwatch battery last with GPS on?

Apple quotes up to 10 hours of workout tracking for Series 12 and up to 18 hours for Ultra 4. Garmin lists up to 47 hours in GPS-only mode for the 47 mm fēnix 8 AMOLED. SANDIT runs 8+ hours.

Keep reading

CompareSANDIT vs WOO CompareSANDIT vs Surfr GuideHow high do kitesurfers jump?
Sources · Last checked October 2026