GARMIN Forerunner 255 Sports Watch - Tidal Blue, 46 mm

GARMIN Forerunner 255 Sports Watch - Tidal Blue, 46 mm

Item No. 10248929
4.8/5 184 reviews
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Tracks sports / steps / distance / calories / sleep
Monitors heart rate / VO2 Max / blood oxygen / stress
Battery life: Up to 14 days
Water resistant & swimproof
GPS
Compatible with Android / iOS
WiFi / Bluetooth
2 year guarantee
€299.00 Save €50.00
Was €349.00 (from 21/02/26 to 08/05/26)

colour: Blue

selected blue
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Tracks sports / steps / distance / calories / sleep
Monitors heart rate / VO2 Max / blood oxygen / stress
Battery life: Up to 14 days
Water resistant & swimproof
GPS
Compatible with Android / iOS
WiFi / Bluetooth
2 year guarantee
Product code: 630166

Meet your new personal trainer. This Garmin Forerunner 255's always-on, full-colour display means you'll never miss an important notification again. But it's more than just a pretty face. With the Morning Report, you'll be ready to hit your fitness goals as soon as you wake up. It sends loads of useful information like your sleep patterns and daily workout routines right to your wrist, so you won't have to reach for your phone. And forget about charging your watch every night - this beauty has up to 14 days of battery life in smartwatch mode, and up to 30 hours in GPS mode.

Good to know

- The Race Widget gives you personalised training tips to help you gain the edge in your next race and leave the competition eating your dust
- See your entire weeks' worth of daily suggested workouts, which adapt after every run to match your progress
- The HRV Status tracks your heart rate variability while you're catching Zs – it also gives you insights into your wellness, recovery and performance
- Prepare for a 5K, 10K and half-marathon with the Garmin Coach, or create your own custom workouts in the Garmin Connect app
- The training status lets you know if you're overdoing it or not working hard enough – it also helps you with your recovery times

Technical specifications for GARMIN Forerunner 255 Sports Watch - Tidal Blue, 46 mm

OVERVIEW

Type
Smartwatch
App store
Garmin Connect IQ store
Size / fit
Fits wrist size 130 - 205 mm
Strap material
Silicone
Closure
Buckle
Compatibility
- Android
- iOS

CONNECTIVITY

Connectivity
- Bluetooth
- ANT+
- NFC
- WiFi
GPS
Yes

POWER

Battery type
Built in rechargeable lithium-ion battery
Charging method
USB to Garmin proprietary plug cable
Charge time
1.5 hours
Battery life
- Smartwatch mode: Up to 14 days
- GPS mode: Up to 30 hours

DISPLAY

Shape
Circle
Size
1.3”
Type
- Transflective memory-in-pixel (MIP) display
- Sunlight visible
- Full colour
Touchscreen
No

FEATURES

Resistance
Water resistant and swimproof up to 50 metres (ATM 5)
Health & fitness tracking
- Heart rate
- Steps
- Distance
- Calories
- Sleep
- Move bar
- Floors climbed
- Menstrual cycle
- 30+ built-in sports & activities
- Triathlon and multisport profiles
- Daily suggested workouts
- Morning report
- Heart rate variability
- Garmin coach
- Recovery time
- Wrist-based running power
- Pacepro
- Grade-adjusted pace
- Training effect
- Track running
- Race predictor
- Advanced running dynamics such as stride length and lactate threshold when paired with compatible accessories (sold separately)
Smart functions
- Smartphone notifications
- Contactless payments
- Music remote
- Alarm
- Find my phone
- Find my watch
Sensors
- Accelerometer
- Barometer
- Compass
- Heart rate monitor (HRM)
- Pedometer
- Reflectance pulse oximetry (SpO2)

GENERAL

Dimensions
12.9 x 46 x 46 mm (H x W x D)
Colour
- Face: Black
- Bezel: Tidal blue
- Strap: Tidal blue
Weight
49 g
Manufacturer’s guarantee
2 years
Box contents
- Garmin Forerunner 255 Sports Watch
- Charging / data cable
- Documentation

Delivering your online order


Small items (laptops, smart tech, small appliances and TVs under 43”)

These are delivered by our courier partners. Delivery usually takes no more than 3-5 working days. Deliveries take place 5 days a week Monday to Friday (excluding public holidays).

Delivery charge: €6.99.

Large items (large kitchen appliances, large screen TVs over 43”)

These are delivered by our specialist delivery teams. Delivery takes between 5-7 working days, 5 days a week from Tuesday to Saturday (excluding public holidays).

Delivery charge: €34.99 (€49.99 for range cookers and American style fridge freezers).

Make sure to add your mobile number when you place your order, so we can text you with delivery updates. Our Track It service also allows you to see where your order is at.

Our in-store collection services

Collect today - You can order your item(s) online, and safely collect them from your chosen store within an hour of placing your order.

Pop in store to collect your items within an hour of ordering them, free of charge (depending on stock availability).

Once you’ve selected "collect in store" at the online checkout, we’ll email you your confirmation & collection details. When you do come to collect your item(s) make sure you bring this confirmation email, and the last four digits of your payment card.

Deliver your order to store for free - We also offer a "deliver to store" in 3-5 working days option for selected products for free. We will send you an email when your order is available to collect from store.

Returns and refunds

If you purchased online and you have changed your mind you can return your items within 30 days even if you have opened it for inspection. It must be returned as new and where possible, in its original packaging*.

If your item develops a fault we will offer either a repair, exchange or refund if the fault occurs within 30 days of purchase (or delivery or installation). If the fault with your product occurs within its guarantee period (normally 12 months from delivery) we will offer you a prompt repair service. In all cases we reserve the right to inspect the product and verify the fault.

*Exclusions apply where we cannot accept a return for hygiene reasons. If unsure, please check the Product Information dropdown above.

See our Returns & Refunds page for more information.

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