Garmin Forerunner 45S - Black (010-02156-02)
Garmin Forerunner 45S - Black (010-02156-02)
Model Number: 010-02156-02
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Tech Specs
In The Box
- Forerunner 45
- Charging cable
- Documentation
Do you have an old GPS unit lying around? The GPS Nation Trade In and Up program is a great way to trade in your old and used GPS for credit towards a new GPS. The choice is entirely yours! We’ve made the process simple and streamlined. Follow these simple steps, and you will be on your way to receiving credit towards your brand new GPS!
1. Get a quote
To get your free quote, provide your GPS type, manufacturer, model, and condition. Within 24 hours, you will receive a quote for the trade-in value of your current product. The GPS trade-in/trade-up form is at the bottom of this page.
2. Ship your product(s) for trade
After accepting our offer, pack your product(s) safely and ship them to us using the pre-paid shipping label provided to you. We will provide a confirmation email when your trade-in arrives at our warehouse. You have 30 days from the date you complete your on-line trade to ship the product to GPS Nation.
3. Make your purchase
Once we receive your product at our warehouse and we validate the stated condition, we will send you a confirmation email. If you elect to receive credit towards a new GPS at gpsnation.com, your store credit will be issued, and you are free to make your purchase.
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Tech Specs
In The Box
- Forerunner 45
- Charging cable
- Documentation
Trade-In
Do you have an old GPS unit lying around? The GPS Nation Trade In and Up program is a great way to trade in your old and used GPS for credit towards a new GPS. The choice is entirely yours! We’ve made the process simple and streamlined. Follow these simple steps, and you will be on your way to receiving credit towards your brand new GPS!
1. Get a quote
To get your free quote, provide your GPS type, manufacturer, model, and condition. Within 24 hours, you will receive a quote for the trade-in value of your current product. The GPS trade-in/trade-up form is at the bottom of this page.
2. Ship your product(s) for trade
After accepting our offer, pack your product(s) safely and ship them to us using the pre-paid shipping label provided to you. We will provide a confirmation email when your trade-in arrives at our warehouse. You have 30 days from the date you complete your on-line trade to ship the product to GPS Nation.
3. Make your purchase
Once we receive your product at our warehouse and we validate the stated condition, we will send you a confirmation email. If you elect to receive credit towards a new GPS at gpsnation.com, your store credit will be issued, and you are free to make your purchase.
Manual & Warranty
Overview
Garmin Forerunner 45S GPS Running Watch – Black (010-02156-02)
Introduction
The Garmin Forerunner 45S is a lightweight GPS running watch built for runners who want reliable performance tracking without unnecessary bulk. At just 32 grams, this device delivers continuous heart rate monitoring, precise GPS tracking, and adaptive training plans in a compact form factor designed specifically for smaller wrists. Whether you're training for a 5K or building an aerobic base, the Forerunner 45S gives you the data you need to run smarter and measure real progress.
Key Features
- Lightweight at 32 grams – Weighs less than a postage stamp for all-day comfort and unrestricted wrist movement during runs
- Battery life up to 7 days in smartwatch mode; extends to 13 hours during continuous GPS tracking sessions
- Wrist-based heart rate monitoring – Captures continuous pulse data with high and low alert thresholds to keep you in the right training zone
- Integrated GPS – Tracks pace, distance, splits, and route data with accuracy; includes interval workout recognition
- Free Garmin Coach – Adaptive training plans that adjust to your fitness level and goals without additional subscription
- 1.04-inch sunlight-readable color display – Vibrant and visible in direct sunlight for easy real-time metric viewing
- Water resistant to 5 ATM – Safe for swimming and splash exposure; rated for water sports
- Built-in sports apps – Profiles for running, cycling, yoga, treadmill, and indoor track workouts
Data Insights
Runners using Garmin sports watches report training effectiveness improvements up to 20% by leveraging real-time performance data and structured feedback. The Forerunner 45S calculates VO2 Max estimates, giving you a measurable snapshot of your aerobic capacity that updates with every run. Combined with Garmin Coach's adaptive plans, this biometric feedback creates a feedback loop that accelerates progress while reducing the guesswork from training decisions.
Usage Instructions
Wear the Forerunner 45S on your wrist and pair it with the Garmin Connect mobile app via Bluetooth. Select your sport profile—running, cycling, or any other activity—and press start to begin tracking. The watch records GPS data, heart rate, and cadence automatically. Access Garmin Coach in the app to download a personalized training plan, and enable smart notifications to stay connected without pulling out your phone during runs.
Design & Material
The Forerunner 45S combines durability with minimalist aesthetics. Its compact dimensions (39.0 x 39.0 x 11.4 mm) make it ideal for runners with smaller frames who find standard watches bulky or uncomfortable. The polymer case resists impact and daily wear, while the silicone strap provides a secure, adjustable fit that stays in place through high-intensity training.
- High-quality polymer case – Durable, lightweight material that withstands impacts without cracking or denting
- Silicone strap with quick-release bars – Comfortable for extended wear; easy to swap for alternative bands from the Garmin ecosystem
- 1.04-inch sunlight-readable color display – Keeps metrics visible outdoors in bright conditions without battery drain
- Customizable watch faces – Access hundreds of designs through Connect IQ, or create data layouts that match your training priorities
- Simple five-button navigation – No touchscreen to fog or fail; tactile controls remain responsive in wet conditions
- Compact 39mm case diameter – Proportioned for petite and mid-size wrists; doesn't overhang or restrict movement
Final Verdict
The Forerunner 45S solves the most common complaint about sports watches: excessive weight and battery demands. You get a full GPS running computer with heart rate monitoring, adaptive coaching, and a week of battery life in a device so light you forget you're wearing it. At this weight and price, there's no reason to train blind or compromise on comfort. Runners serious about tracking their fitness and improving their times should add the Forerunner 45S to their gear today.
