BioLite SolarPanel 5+ vs Coros APEX 4 (42mm)
Weight and specs compared for 2026 — and which one to choose.
Mountain sports GPS watch with dual-frequency satellite positioning for improved accuracy, ECG heart rhythm monitoring, and barometric altimeter for navigation
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BioLite SolarPanel 5+ vs Coros APEX 4 (42mm): which should you buy?
If saving weight is your priority, the Coros APEX 4 (42mm) wins — at 56 g it is 194 g (78%) lighter than the BioLite SolarPanel 5+ (250 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest electronics page, or browse the full gear weight database.