Ref. : 8539878

Our team of passionate runners designed this watch to allow you to time your runs easily.

Are you looking for a watch with simple features for all your training sessions, even in rainy weather? Our ATW100 with patented impermeability will accompany you on all your runs

Color: dark blue

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Our services :

  • Free delivery for Decathlon brands orders above $399
  • All Decathlon products are eligible for lifetime return

Products benefits

Parameter measurement

This simple and precise watch features a 1/100 s stopwatch


The watch is fully waterproof (50 m), with buttons that work underwater.


Optimal readability with large digits on screen

Water resistance

Resistant to swimming pool water (chlorine), sea water (salt) and sweat

Ease of use

Easy to set with the icons on the screen and 3 buttons

Technical information

Time your outings

Time your performances with the split-timer function that shows 1 second to 59 minutes and 1 minute to 99 hours.

Set your sights high: big numbers for your performances

The screen displays your time in big numbers so that you can take it all in at a glance as you run.

Your watch is sufficiently waterproof for swimming

Keep your watch on as you swim along the surface or have a shower after your exertions, it's waterproofed to 5 ATM and has buttons that work underwater.

Measure your times using the lap timer

Measure your regularity or your progress over a fixed distance: the split-timer function allows you to measure your interval times, using measurements such as laps or km.


2 years

Product concept & technology

Product Composition

Wristband 90% Thermoplastic Polyurethane, 10% Stainless Steel Carcass 90% Polycarbonate-Acrylonitrile Butadiene Styrene, 10% Polymethyl Methacrylate Board for surf 100% PCBA


At Kalenji, we've been making watches specifically for sportsmen and women for the last 20 years. During development, each model undergoes more than 30 different tests in the laboratory as well as some tests in the field conducted by our teams of testers.

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