Apple · Smartwatch
Apple Watch Series 6
First Apple Watch with SpO₂. The oldest model still on current watchOS.
$399Apple →
Battery18 hr
Water5 ATM
Weight36.5g
Sensors10
OSWatchos
The Series 6 (2020) added the pulse oximeter and the always-on altimeter. It is the oldest Apple Watch still running current watchOS, so sleep stages, Training Load, and cycle tracking are all present — what you give up against a modern model is the skin-temp sensor and the newer chip.
Strengths
- First Apple Watch with SpO₂
- Same case design as Series 5
- Cheap on the used market
Tradeoffs
- Oldest supported model — will drop off watchOS first
- No skin-temp or modern stress tracking
- 18-hour battery
Full specs
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Common questions
- How much does the Apple Watch Series 6 cost?
- The Apple Watch Series 6 has a list price of $399.
- Does the Apple Watch Series 6 require a subscription?
- No. Apple sells an optional premium tier at a monthly fee for deeper analysis, but the Apple Watch Series 6 tracks and syncs without it.
- How long does the Apple Watch Series 6 battery last?
- About 18 hr of typical use per charge. Heavy GPS use, an always-on display, and continuous sensing all pull that number down.
- Is the Apple Watch Series 6 waterproof?
- The Apple Watch Series 6 is rated 5 ATM (50m), which covers showering, swimming, and surface water sports. It is not a dive rating.
- Does the Apple Watch Series 6 work with iPhone and Android?
- It pairs with iPhone only — there is no Android app.
- Is the Apple Watch Series 6 still worth buying?
- The Apple Watch Series 6 came out in 2020 and Apple has discontinued it, so new stock is limited and prices vary. Check it against the current smartwatch lineup before buying.