: Occasionally stocks refurbished units. These typically come with a 90-day Amazon Renewed Guarantee for peace of mind.

An upgraded version with a more secure watch-style buckle and 5 ATM water resistance, making it fully swim-ready. Buying Tips

: Good options for finding used units directly from owners. Prices here are often more negotiable.

: Both models come in Small (usually for 125–170mm wrists) and Large (155–210mm wrists).

: These devices typically offer 3–4 days of battery life, but as they are older units, used models may have slightly diminished capacity.