
OnePlus
The OnePlus comeback — Wear OS with 100-hour battery

Samsung
Samsung's deepest health software — held back by battery
OnePlus Watch 2
OnePlus Watch 2
OnePlus Watch 2
Stainless-steel 47mm case with a sapphire crystal display. Two physical buttons. Large and substantial — the heft is the main design critique. Premium build for the price.
Samsung Galaxy Watch 8
TechTalkTown may earn a commission from purchases made through links below. As an Amazon Associate I earn from qualifying purchases. This does not influence our reviews. Learn more.
Samsung Galaxy Watch 8
Samsung Galaxy Watch 8
The Galaxy Watch 8 adopts the Galaxy Watch Ultra's cushion 'squircle' shape — a polarizing redesign — in armor aluminum with sapphire crystal. Two sizes, 40mm and 44mm. A new Dynamic Lug system makes bands easy to swap, Apple Watch-style.
OnePlus Watch 2
1.43-inch AMOLED, 466×466 resolution, sapphire crystal. Bright, sharp, with always-on support — the RTOS efficiency chip keeps the AOD battery cost low.
Samsung Galaxy Watch 8
A Super AMOLED panel — 1.34-inch on the 40mm, 1.5-inch on the 44mm — that now peaks at a brilliant 3,000 nits, a big jump over the Galaxy Watch 7's 2,000. Sapphire crystal protects it, and there's an always-on mode.
OnePlus Watch 2
Optical HR, SpO2, sleep tracking, stress monitoring. OnePlus Health app for analytics. Covers the everyday-wellness basics; less polished than Samsung Health or Fitbit.
Samsung Galaxy Watch 8
This is the Galaxy Watch 8's strongest card — the deepest health suite of any Wear OS watch: ECG, blood pressure, body composition, SpO2, skin temperature, plus new metrics like the Antioxidant Index, Vascular Load and AGEs Index. Heart-rate accuracy during exercise is the weak spot.
OnePlus Watch 2
100+ workout modes, dual-frequency GPS, auto-detection. The long battery means multi-day workout tracking without recharge. 5 ATM water resistance.
Samsung Galaxy Watch 8
Samsung Health workout tracking with dual-frequency GPS, automatic exercise detection and a new adaptive Running Coach. GPS distance is the best of any Samsung watch yet, though still behind a dedicated sports watch — and GPS workouts drain the battery hard.
OnePlus Watch 2
500mAh battery — up to 100 hours with the always-on display off, the headline feature. Dual-engine architecture is the breakthrough. 10-minute fast charge returns a full day.
Samsung Galaxy Watch 8
The Galaxy Watch 8's clearest weakness. Samsung rates it at 40 hours (always-on display off) or 30 hours (on), and real-world results are merely okay — roughly 27-45 hours depending on settings, with the 44mm a particular underperformer. A full charge takes around an hour to 90 minutes.
OnePlus Watch 2
Wear OS 4 + the dual-engine architecture. OnePlus Health app, Google Wallet, full Play Store. Works with any Android phone. The Watch 2 returned OnePlus to Wear OS.
Samsung Galaxy Watch 8
One UI Watch 8 on Wear OS 6, running on the 3nm Exynos W1000 with 2GB of RAM and 64GB of storage. Gemini is built into the wrist. Performance is snappy and Samsung Health is comprehensive — but the deepest features need a Samsung phone, and there's no iOS support.
OnePlus Watch 2
Stainless-steel case + sapphire crystal + 5 ATM water resistance + IP68 + MIL-STD-810H. A genuinely rugged build for the price.
Samsung Galaxy Watch 8
Sapphire-crystal glass over an armor-aluminum case, rated 5 ATM plus IP68 and MIL-STD-810H. It holds up well to everyday knocks — a month of heavy wear left long-term reviewers with barely a scratch.
OnePlus Watch 2
Dual-frequency GPS, NFC for Google Wallet, Bluetooth, Wi-Fi. No LTE — phone required for connectivity.
Samsung Galaxy Watch 8
Dual-frequency GPS, Bluetooth, Wi-Fi and NFC payments. An optional LTE model adds standalone connectivity for about $50 more.
OnePlus Watch 2
$299.99 launch. The Wear OS battery champion at launch. Competes with the Galaxy Watch 6 and the Pixel Watch 2 — and decisively beats both on battery.
Samsung Galaxy Watch 8
At about $349.99 (40mm) rising to roughly $429.99 for the 44mm LTE, the Galaxy Watch 8 took a price hike reviewers widely call unjustified. It's the richest-software Wear OS watch — but the Pixel Watch 4 and OnePlus Watch 3 both counter hard on, respectively, polish and battery.