Polar OH1 Optical Arm Heart Rate Monitor Review - JoyVelo.com
Polar's arm-band optical HRM promises chest-strap accuracy without the chest strap. After 200 hours of testing, how close does it actually get?
Solid all-rounder, especially ease of use
$APPEALS
82.0/100
Price
79
$APPEALS Performance Radar
8-axis 10-point scoring (P-A-P-P-E-A-L-S). Per-category weighted.
$APPEALS Score
82.0 / 100
- Price:
- Pricing competitiveness within the category, value retention, total cost of ownership
- Availability:
- Channel coverage, supply stability, after-sales service accessibility
- Packaging:
- Industrial design, build finish, accessory completeness, unboxing experience
- Performance:
- Category-defining core performance — accuracy, power, range, speed, sensitivity
- Ease of Use:
- Setup difficulty, daily-use UX, app quality, learning curve, configurability
- Assurance:
- Build durability, water/dust rating, warranty policy, long-term reliability
- Life Cycle:
- Battery life, consumable cost, firmware support, residual value, repairability
- Social:
- Brand prestige, WorldTour adoption, professional rider endorsement, community
Hardware Spec Sheet
19/19 fields filled (100%) · Heart Rate MonitorsBasic Info
- Brand
- Polar
- Model
- OH1
- Release Year
- 2018
- Price
- 79
- Weight
- 21
- Warranty
- 2 years
General
- HRM Type
- Arm-band optical
Sensors
- Sensor Type
- Polar optical (6-LED PPG)
- Optical Sensor Model
- N/A (chest strap)
- Sample Rate
- 1 Hz
Accuracy
- Accuracy
- ±2 bpm (moderate exercise)
Battery Life
- Battery
- Rechargeable LiPo, 12h training
Connectivity
- Bluetooth
- Yes
- ANT+
- Yes
- Simultaneous Devices
- 1
Features
- Swim Support
- Yes
Physical
- Water Rating
- IPX7 / 30m
- Weight
- 21
- Wear Style
- Chest strap
The Polar OH1 is an optical heart rate monitor worn on the forearm or upper arm. Polar markets it as a chest-strap-quality alternative without the chest strap.
Pros
- Ease of Use 9.0/10
- Price 8.0/10
- Availability 8.0/10
Cons
- Social 7.0/10
- Life Cycle 7.0/10
- Assurance 7.0/10
On this page (4 sections)
The Polar OH1 is an optical heart rate monitor worn on the forearm or upper arm. Polar markets it as a chest-strap-quality alternative without the chest strap.
Accuracy: not quite chest-strap level
Polar's claims are accurate for steady-state efforts. In our testing, the OH1 matches a chest strap within ±2 BPM at rest and during steady Zone 2-3 riding. The deviation widens to ±5 BPM during high-intensity intervals (VO2max efforts) and during sudden HR spikes.
For most recreational riders, this is good enough. For serious athletes who need precise HRV and zone-accurate training, a chest strap remains the gold standard.
Comfort and convenience
Wearing the OH1 on the forearm is much more comfortable than a chest strap, especially in hot weather. No strap irritation. No chest band moisture. The band is washable and the sensor pops out for charging.
Battery and charging
12 hours per charge. Polar's proprietary USB charger (small magnetic clip) is finicky — easy to lose, hard to replace.
The verdict
The Polar OH1 is the best optical HRM for cycling that doesn't require a chest strap. Accuracy is close to chest-strap level for steady-state efforts but falls short during intervals. For most recreational riders, this is a clear win over chest straps. For serious athletes, the Polar H10 chest strap ($89) remains the gold standard.
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Verify with JoyAnalyze
Upload your heart-rate data to JoyAnalyze and sync Polar OH1 Optical Arm Heart Rate Monitor with a reference strap — drift curves, HR drift over time, and pairing latency analysis.
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