Garmin Forerunner® 255S Music GPS Running Smartwatch - Black

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Light on the wrist, heavy on the features​

Get ready to improve your fitness routine with your biggest cheerleader! Whether it’s an early morning run, a solo stroll or a training day, the Garmin Forerunner® 255S Music in black will be your favourite motivator. With its lightweight feel and sleek design, you’ll forget you’re wearing one. ​

With the Garmin Forerunner® 255S Music you can be prepared for every session with its 12-days battery life*. Have your music at your fingertips by downloading your workout playlist straight to your watch from your Spotify, Deezer or Amazon music account. So put on your trainers, press play on your playlist and get ready to move.​

Wanting to switch up your training to swimming activities? The Garmin Forerunner® 255S Music enables you to take part in a range of activities by using built-in sport profiles, including use in open-water. With additional features, you can browse your own personal training plan and suggested workouts tailored to your performance. With hard work comes great rest, and the Garmin Forerunner® 255S Music will provide you with details on your recovery duration- as well as your overall stress, sleep statistics and daily activities outside of your workout.​

Out and about and need to make a quick payment? Thanks to Garmin pay, there’s no need for your phone or credit card to come with you on your workout. Head straight to your nearest café to purchase a well-deserved post-workout treat and pay from the power of your watch.​

*12 days of battery life in smartwatch mode and up to 26 hours in GPS mode

Suitable for

This product is suitable for adults and older children with adult supervision and assistance.

How to use

To take full advantage of the Forerunner® features, complete these tasks

Pair the Forerunner watch with your phone using the Garmin Connect™ app (Pairing Your Phone)

Set up Wi‑Fi® networks (Connecting to a Wi‑Fi Network)
Set up safety features (Safety and Tracking Features)

Set up music (Music)
Set up your Garmin Pay™ wallet (Setting Up Your Garmin Pay Wallet)

Hazards and Cautions


Avoid extreme shock and harsh treatment, because it can degrade the life of the product

Avoid pressing the keys under water
Do not use a sharp object to clean the device

Avoid chemical cleaners, solvents, and insect repellents that can damage plastic components and finishes

Thoroughly rinse the device with fresh water after exposure to chlorine, salt water, sunscreen, cosmetics, alcohol, or other harsh chemicals. Prolonged exposure to these substances can damage the case

Do not store the device where prolonged exposure to extreme temperatures can occur, because it can cause permanent damage

Important info

Country of Origin: Taiwan

Product Specification:

Alarm Yes

Step Counter 
Calories Burned 
Floors Climbed 
Distance Travelled 
Intensity Minutes 
Move Iq™ 
Garmin Connect™ Challenges App 
Automatic Rep Counting 
Available Gym Activity Profiles Strength, Cardio, Hiit And Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Yoga, Pilates And Breathwork
On-Screen Workout Animations 
On-Screen Workout Muscle Maps

Battery Life

Smartwatch mode: Up to 12 days
GPS-only GNSS mode: Up to 26 hours
All-Systems GNSS mode with music: Up to 5.5 hours
All-Systems GNSS mode: Up to 20 hours
All-Systems GNSS mode plus Multi-Band: Up to 13 hours
See details

Compatibility with Smart Phone iPhone®, Android™
Connectivity Type Bluetooth®, ANT+®

41 x 41 x 12.4 (mm)

Display Detail Display Size 1.1" (27.5Mm) Diameter
Display Resolution 218 X 218 Pixels
Display Type Sunlight-Visible, Transflective Memory-In-Pixel (Mip)
Location Services GPS, Find my Phone, Find my Watch
Materials LENS MATERIAL Corning® Gorilla® Glass 3
BEZEL MATERIAL Fibre-reinforced polymer
QUICK RELEASE BANDS Yes (18 mm, Industry standard)
Memory 4GB
NFC Information Garmin Pay™
Sensors & Health monitoring Wrist-Based Heart Rate
Daily Resting Heart Rate 
Abnormal Heart Rate Alerts 
Garmin Ecg App 
Body Battery™ Energy Monitor 
All-Day Stress Tracking 
Relaxation Reminders 
Relaxation Breathing Timer 
Sleep Score And Insights 
Women'S Health 
Health Snapshot 
Safety Tracking Features Livetrack 
Live Event Sharing Android™ Only
Incident Detection During Select Activities 
Incident Detection Alert On Phone For Wearables 
Screen size 1.1" (27.5mm) Diameter
Smart Features Connect Iq™ (Downloadable Watch Faces, Data Fields, Widgets And Apps) 
On-Device Connect Iq™ Store 
Smart Notifications 
Text Response/Reject Phone Call With Text (Android™ Only) 
Realtime Settings Sync With Garmin Connect™ Mobile 
Battery Saver - Customisable Low Power Watch 
Music Storage 
Virb® Camera Remote 
Pairs With Garmin Golf App 
Strap Colour Black
Touch screen Yes
Watch Type  Fitness Smart Watch
Water Resistance Yes - Water Rating 5 ATM
Weight 39g
Wi-Fi/Wireless Connectivity No more less

Delivered by supplier

This product will be delivered directly from the supplier and so only home delivery is available. It will usually take 3 – 5 working days to be delivered.

For information on returns, please see our returns information.