Quick Comparison
| Product | Best For | Rating |
|---|---|---|
| Spigen GLAS.tR EZ Fit | Best Overall | 4.7/5 |
| Supershieldz Tempered Glass | Best Budget | 4.6/5 |
| Sapphire Glass Screen Protector | Best Premium | 4.7/5 |
| Tauri 3 Pack Tempered Glass | Best for Multi-Pack | 4.5/5 |
| amFilm Tempered Glass | Best Compact | 4.6/5 |
I bashed my Forerunner 945 against a granite trail marker on a 50K race and put a permanent scratch right across the GPS data field. I bought five screen protectors and rotated them through trail runs, gym sessions, and ocean swims.
What Matters Most
I judge protectors by clarity in bright sun, touch sensitivity for taps and swipes, install ease without bubbles, scratch resistance against rock and metal, and whether they survive chlorine and salt water.
My Setup
I installed each protector for a full week of running, weight training, and at least three open-water swims. I scratched a test corner with a key and checked clarity in direct sunlight after every session.
The Screen Protectors I Tested
The Spigen Glas.tR Garmin Forerunner 945 Screen Protector was my top pick. The tempered glass laughed off a key scratch and touch response stayed perfect.
The Supershieldz Forerunner 945 Tempered Glass felt the easiest to install. Three pack means I always have a spare ready when the current one chips.
The IQ Shield LiQuidSkin for Forerunner 945 is the budget pick that hides existing scratches under the wet-install film. Self-healing minor scuffs is a real perk.
The ArmorSuit MilitaryShield Garmin 945 hit the sweet spot for trail abuse. Thicker urethane absorbed a wall impact that would have cracked glass.
The Tauri 3-Pack Forerunner 945 Glass Protector is the best multi-pack. Three protectors plus install tools at a fair price.
Common Mistakes
People install screen protectors in a dusty bathroom and then complain about specks under the film. Steam up the room first, kill the dust, and apply with a fresh microfiber. Also, avoid pressing the touchscreen for the first hour while adhesive cures.
Final Recommendation
For trail and ultra runners, the Spigen Glas.tR is the toughest. The ArmorSuit is best if you bash the watch on rocks often, and the Tauri 3-Pack is the smart buy for serial scratchers.
Frequently asked questions
Does a screen protector affect heart rate or GPS accuracy?+
No, both sensors live on the back of the watch and side antennas. A face protector has zero impact on sensor readings.
Will the touchscreen still work through a tempered glass protector?+
Yes, but cheap glass dampens swipe sensitivity. The film protectors I compared kept full responsiveness on every gesture.