---
product_id: 18138575
title: "Series 3 Sailing Watch in Yellow - Water Resistant Race Timer for Sailing"
brand: "optimum time"
price: "€ 259.80"
currency: EUR
in_stock: true
category: "Optimum Time"
url: https://www.desertcart.sk/products/18138575-series-3-sailing-watch-in-yellow-water-resistant-race-timer
store_origin: SK
region: Slovakia
---

# Pre-programmed ISAF race start sequences with sync button Water resistant up to 5 ATM (50m) for all conditions 16mm digit height for instant readability Series 3 Sailing Watch in Yellow - Water Resistant Race Timer for Sailing

**Brand:** optimum time
**Price:** € 259.80
**Availability:** ✅ In Stock

## Summary

> ⏳ Own the race start like a pro with the iconic Big Yellow Timer!

## Quick Answers

- **What is this?** Series 3 Sailing Watch in Yellow - Water Resistant Race Timer for Sailing by optimum time
- **How much does it cost?** € 259.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/18138575-series-3-sailing-watch-in-yellow-water-resistant-race-timer)

## Best For

- optimum time enthusiasts

## Why This Product

- Trusted optimum time brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Glow & Go Anytime:** Electro-luminescent backlight and glow-in-the-dark features keep your timer visible from dawn till dusk.
- • **Race-Ready Visibility:** Massive 16mm digits and adjustable viewing angle ensure you never miss a crucial second on the water.
- • **Versatile Mounting Options:** Wear it on your wrist, over your sailing gear, or mount it on your boom/mast with the included bracket for ultimate convenience.
- • **Built to Brave the Elements:** Shock-resistant ABS case and 5 ATM water resistance keep your timer ticking through every splash and bump.
- • **Seamless Race Synchronization:** Sync button and pre-set ISAF countdowns guarantee perfect alignment with race control—no more missed starts.

## Overview

The Optimum Time Series 3 Sailing Watch in Yellow is the definitive race timer designed for competitive sailors. Featuring a large 38x20mm single-row display with 16mm digits, it offers unparalleled readability. Its rugged 65mm ABS case is shock resistant and water resistant up to 5 ATM, perfect for harsh marine environments. Pre-programmed ISAF start sequences with audible alerts and a sync button ensure flawless race timing. Versatile mounting options and an adjustable viewing angle make it the trusted choice for dinghy racers worldwide.

## Description

The original and iconic ‘big yellow timer’ is still the top choice for competitors around the world today. If you need a robust timer with an easy-to-read display and exceptional sailing functionality then this is the one for you. The OS3 can be strapped to a mast or comfortably worn over your sailing kit. The face rotates to give you the best viewing angle and the big buttons mean you won’t be left fumbling when the race is about to begin. The OS3 also features our essential sync button which synchronises your countdown to the race control timer ensuring you won’t miss the gun. THE DETAILS: 65mm diameter ABS case 38mm x 20mm display Single row display with 16mm digit height Adjustable viewing angle Boom/mast mount bracket supplied Adjustable elasticated strap Water-resistant to 5 ATM Shock Resistant Construction Electro-luminescent backlight feature TIMER FUNCTIONS: Normal timekeeping mode (12 or 24 Hours) Pre-programmed 5 4 1 0 ISAF start sequences or 5 min 3 min and 1 min programs with audible alarms (can be silenced if preferred) Countdown & repeat or countdown and up Sync button for instant synchronisation if a gun is missed Count-up from zero

## Features

- 38mm x 20mm display size. Single row display. Massive 16mm digit height. Adjustable viewing angle.
- 5,4,1,0 ISAF start sequence pre-programmed with audible warning signals (can be silenced if preferred).
- Boom/Mast Mount Bracket Supplied. Elasticated Strap for Wrist or over sleeve wearing.
- Countdown repeat option or Countdown and Up to show elapsed time for handicap races.
- Large 65mm overall ABS case. Shock Resistant Construction. Water Resistant to 5 ATM.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0058GEDSG |
| Additional Features | Glow In The Dark, Water Resistant |
| Age Range Description | Adult |
| Band Color | Yellow |
| Band Material Type | Plastic |
| Band Width | 20 millimeters |
| Best Sellers Rank | #92,594 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #509 in Timers |
| Brand Name | Optimum Time |
| Case Diameter | 6.5 centimeters |
| Case Material Type | Acrylonitrile Butadiene Styrene |
| Case Thickness | 16 millimeters |
| Character | Fashion |
| Clasp Type | Tang Buckle |
| Closure Type | Buckle |
| Crystal | Plastic |
| Customer Reviews | 4.2 4.2 out of 5 stars (729) |
| Dial Color | Yellow |
| Display | Digital |
| Embellishment Feature | Stud |
| Face Style | Sector |
| Global Trade Identification Number | 05060269670081 |
| Included Components | Elastic strap, Boom/mounting bracket for mat |
| Item Weight | 3.52 ounces |
| Manufacturer | Optimum Time |
| Manufacturer Part Number | OS315 |
| Manufacturer Warranty Description | 1 Year Warranty |
| Model Name | OS315 |
| Model Number | OS315 |
| Model Series | OS3 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Battery Powered |
| Shape | Round |
| Sport Type | Sailing |
| Strap Type | fabric strap |
| Style Name | Sport |
| Theme | Sports |
| Unit Count | 1 Count |
| Watch Movement Type | Quartz |
| Water Resistance Depth | 50 meters |
| Water Resistance Level | Water Resistant |

## Product Details

- **Color:** Yellow
- **Brand:** Optimum Time
- **Material:** Plastic
- **Item Weight:** 0.22 Pounds
- **Number of settings:** 5

## Images

![Series 3 Sailing Watch in Yellow - Water Resistant Race Timer for Sailing - Image 1](https://m.media-amazon.com/images/I/71DYWQL1O4L.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: does timer beep every minute**
A: In countdown mode it beeps every minute and during the last minute it beeps every 10 seconds. In the last 10 seconds it beeps each second with a long tone at zero.

**Q: Can the timer be set to 3 minutes ? ( or multiples of 1 minute..)**
A: Timer programmes are available in 5,4,1,0 followed by 5mins, 3mins,1min.

**Q: is there an option to mute the beeper while using countdown mode?**
A: Yes

**Q: Is the watch waterproof or water resistant?**
A: Yes, it is. Never used mine to dive, but works fine for sailing and kiting.

## Frequently Bought Together

- Optimum Time Series 3 Sailing Watch in Yellow - Water Resistant Race Timer for Sailing
- Optimist Racing: A Manual for sailors, parents & coaches (Sail to Win)
- Schaefer Little Hawk MK1 Wind Indicator f/Dinghies Up to 6M

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**Shop now:** [https://www.desertcart.sk/products/18138575-series-3-sailing-watch-in-yellow-water-resistant-race-timer](https://www.desertcart.sk/products/18138575-series-3-sailing-watch-in-yellow-water-resistant-race-timer)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-10-04*