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676 models available. Showing nine - search to narrow the list.

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Lowest recorded store prices take priority over announced or launch prices, within the selected source market. Currencies use the dated EUR reference rates. Deposits and recurring charges are excluded from price order; missing prices stay last. Original price records remain visible.

The differences that matter

Chargerless Ray

Sleep, activity and heart-rate trends

Connection & compatibility
iPhone/Android app; Apple Health and Health Connect claimed ↗
Battery / power
Up to 60 days in darkness (manufacturer claim) ↗

Keep in mind Solar endurance and sensing performance have not been independently verified here.

Polar Loop (2025)

Daily activity, sleep and recovery trends

Connection & compatibility
Bluetooth LE to Polar Flow; one app connection ↗
Display
No screen ↗
Battery / power
Up to 8 days ↗

Published specifications and documented constraints. See the full comparison below for prices and sources.

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Chargerless Ray versus Polar Loop (2025)
Fitness wearablesAdd a model
Chargerless Ray
Fitness wearables · ChargerlessChargerless RayPre-order
Polar Loop (2025)
Fitness wearables · PolarPolar Loop (2025)Released
Prices · all markets
$219 USD≈ €196 EURECB 2026-10-12US · Preorder price · Pre-order
1 offer records & sources
$219 USD≈ €196 EURECB 2026-10-12 US · Preorder price
Pre-order

Chargerless

Ray silver case with selected standard band; gold finish adds US$30

Batch 3 plan: December 2026-January 2027. Shipping/tax total and destination eligibility require checkout.Check merchant offer ↗Price source ↗ Checked 2026-10-12
$199.99 USD≈ €179 EURECB 2026-10-12US · Store price · In stock
1 offer records & sources
$199.99 USD≈ €179 EURECB 2026-10-12 US · Store price
In stock

Polar US

Standard sensor/band package

Official structured product data lists InStock; destination checkout not completed.Check merchant offer ↗Price source ↗ Checked 2026-10-12
Designed forSleep, activity and heart-rate trends ↗Daily activity, sleep and recovery trends ↗
SensorsHeart rate, HRV, body-temperature trends, steps and light exposure ↗Precision Prime optical HR; accelerometer ↗
DisplayNot verifiedNo screen ↗
Battery / powerUp to 60 days in darkness (manufacturer claim) ↗Up to 8 days ↗
Battery contextDirect outdoor sunlight sustains power; indoor lighting barely charges ↗Manufacturer operating-time claim ↗
Connection & compatibilityiPhone/Android app; Apple Health and Health Connect claimed ↗Bluetooth LE to Polar Flow; one app connection ↗
Water / dust ratingIP68 claimed ↗30 m rating ↗
Weight7 g claimed device weight; band basis unspecified ↗Approx. 28 g (published US figure: 1 oz) including band ↗
SubscriptionNo subscription claimed ↗No required subscription ↗
Form factorScreenless wrist band; polished steel case ↗Screen-free wristband ↗
ChargingSolar cell; no charging port ↗Not applicable to this category
AvailabilityNew orders are for Batch 3, with planned shipping December 2026-January 2027. Sold-out batch labels and maker-hosted testimonials do not establish the first customer delivery date.Official product listing checked. Destination delivery, taxes and checkout stock depend on the regional store.
Important context
  • Solar endurance and sensing performance have not been independently verified here.
  • One minute refers to direct outdoor sunlight, not normal indoor light.
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Editorial pick & release#1 · Upcoming Fitness wearablesExpected: December 2026-January 2027New orders in Batch 3#10 · Our Top 10 Fitness wearablesAnnounced: Sep 3, 20252025 model announcement; not the original 2013 Loop
EvidenceManufacturer source Checked 2026-10-12Manufacturer source Checked 2026-10-12

Battery claims use different conditions and are not a controlled benchmark. “Not verified” is an evidence gap, not a missing feature. Prices are dated regional snapshots. Deposits, bundles and historical launch prices are labelled. Brightness measurement methods and battery workloads vary by manufacturer.