The palmar digital artery. Nature's perfect sensor site.
Smartwatches attempt to push light through thick wrist tendons and bone (4–8mm depth). Fingers have superficial digital arteries just 0.5mm beneath skin — delivering 100× signal amplitude and crystal-clear photoplethysmography (PPG) waveforms.
| Parameter | Palmar Digital Artery (Ring) | Radial Artery (Wrist Watch) |
|---|---|---|
| Signal Depth | 0.5mm (Superficial) | 4–8mm (Buried under bone/tendons) |
| Signal Amplitude | 100× Higher Amplitude | 1× Baseline (Attenuated) |
| Signal-to-Noise (SNR) | +34 dB (Crystal Clean) | +8 dB (High Motion Noise) |
| HR Accuracy | 99% Clinical Grade | 85–90% Consumer Grade |
| HRV Precision | Clinical rMSSD (1ms resolution) | Estimated / Filtered |
Your heart, in photons.
Dual green and infrared LEDs emit light into finger capillary beds at 250Hz. Photodiode arrays measure the returning pulse to extract heart rate, HRV, rMSSD, and cardiovascular baselines with clinical precision.
±0.05°C. Your body's whisper.
Dual NTC thermistors track skin temperature at 0.05°C accuracy. Deviations as small as 0.2°C can flag illness, ovulation, and recovery stress — often 36 hours before conscious symptoms.
Every micro-movement, decoded.
A MEMS 3-axis accelerometer captures sub-millimeter wrist movements during sleep staging, step counting, and exercise intensity classification. Sleep position, restlessness, and breath disruptions are all visible in the data.
Oxygen saturation, fingerprinted.
Red and infrared light absorption ratios quantify blood oxygen saturation. Readings below 95% during sleep may indicate disrupted breathing patterns or altitude stress — caught silently while you rest.
The invisible load.
HRV beat-to-beat analysis extracts the Autonomic Nervous System balance between sympathetic (fight/flight) and parasympathetic (rest/digest) states. Your stress score isn't how you feel — it's what your nervous system is actually doing.
Deeper than green light.
Infrared PPG penetrates deeper tissue for superior dark-skin accuracy and continuous overnight monitoring. Where green light fails, infrared succeeds — ensuring clinical accuracy across all skin tones and conditions.
Stress written in sweat.
Micro-variations in skin conductance derived from temperature and PPG signal patterns correlate with emotional arousal and cognitive load. The ring builds a holistic stress picture from multiple passive signals without dedicated GSR hardware.
Explore the 7 Sensors Inside Ring R1
Hover or tap any hotspot pin on the titanium ring chassis to inspect physiological sensor telemetry specs.
PPG Dual Optical Sensor Array
Dual 525nm Green & 940nm Infrared LEDs emit photons through 0.5mm palmar digital capillaries, sampling pulse volume variations 250 times per second with clinical precision.
Filterable Sensor & Hardware Spec Dossier
Dual Green/IR Photodiode
Measures arterial blood volume changes at 250Hz frequency for continuous RHR, HRV rMSSD, and pulse wave analysis.
- Wavelength 525nm Green / 940nm IR
- Sampling Rate 250 Hz
- Signal Depth 0.5mm Palmar Artery
- Resolution 16-Bit Precision
Dual NTC Thermistors
High-precision NTC thermistors detect skin temperature fluctuations down to ±0.05°C, predicting recovery and fever onset.
- Accuracy ±0.05°C
- Sensitivity 0.01°C resolution
- Measurement Interval Every 60 seconds
- Thermal Coupling Direct Epoxy Skin Contact
3-Axis MEMS Accelerometer
Low-noise 3-axis accelerometer tracking micro-movement during sleep staging, activity classification, and step count.
- Range ±16g Dynamic Range
- Motion Resolution Sub-millimeter
- Sampling Frequency 100 Hz
- Sleep Staging 95% PSG Validation
Cortex-M4 Telemetry Processor
Ultra-low-power MCU running on-chip DSP noise cancellation algorithms and AES-128 cryptographic telemetry security.
- Architecture Arm Cortex-M4 32-Bit
- DSP Engine On-Chip Hardware DSP
- Security AES-128 Cryptographic Unit
- Power Consumption 0.18mW Active
Grade-5 Titanium Shell
Aerospace Ti-6Al-4V titanium alloy chassis with Diamond-Like Carbon (DLC) coating for ultimate durability and scratch resistance.
- Material Grade-5 Titanium (Ti-6Al-4V)
- Coating Diamond-Like Carbon (DLC)
- Weight 3.6 grams
- Water Resistance 100m / 10 ATM
Hypoallergenic Epoxy Inner
Non-allergenic medical-grade resin inner molding certified under ISO 10993 for 24/7 continuous skin contact safety.
- Standard ISO 10993-10 Skin Safe
- Allergen Rating 100% Nickel-Free
- Finish Seamless Satin Polish
- Thermal Resistance -20°C to +70°C
42 Biomarkers Tracked at 250Hz Precision
Continuous optical and thermal stream processing delivering real-time physiological insights without subscription lock.
Numbers that matter. Validated by science.
Validated against polysomnography gold standard. Clinical data on file.
Grade-5 Titanium. Carved from a single ingot.
- Density: 4.43 g/cm³
- Mohs Hardness: 6.0
- Biocompatibility: ISO 10993 Certified
- Weight: 3.6g total ring weight
Diamond-Like Carbon. Harder than steel.
- Hardness: 2500 HV (vs Steel: 700 HV)
- Thickness: 1–4 microns
- Friction coefficient: 0.1 (vs steel: 0.4–0.8)
- Scratch resistance: Exceptional
Hypoallergenic. Inert. Invisible.
- Material: Medical-grade epoxy resin
- Hypoallergenicity: ISO 10993-10 Skin Safe
- Optical clarity: Transparent for sensor light pass-through
- Water resistance: 100m / ATM 10
Ring R1 vs Leading Global Smart Rings
Why pay monthly rent for your own health data? See how GridsGear Ring R1 delivers top-tier telemetry at zero recurring cost.
| Feature / Metric | GridsGear Ring R1 | Oura Ring 4 | RingConn Gen 3 | Circular Ring 2 |
|---|---|---|---|---|
| Upfront Price | Rs 9,999 PKR | ~$349 USD (~Rs 97,000) | $349 - $369 USD | $304 USD |
| Monthly Subscription | Rs 0 (ZERO Forever) | $5.99/mo ($69.99/yr) Paywall | $0 / mo | $0 / mo |
| Medical Sensor Count | 7 Sensors | 6 Sensors | 4 Sensors | 3 Sensors |
| Biomarkers Tracked | 42 Biomarkers | 28 Biomarkers | 22 Biomarkers | 18 Biomarkers |
| PPG Sampling Frequency | 250 Hz | 50 Hz | 50 Hz | 25 Hz |
| Palmar Digital PPG Depth | 0.5mm (100x Signal) | 0.5mm | 0.5mm | 0.5mm |
| Battery Life | 7 Days | 7 Days | 14 Days | 6 Days |
| Titanium Grade 5 + DLC | (Aluminum) | |||
| Cash on Delivery (Pakistan) | ||||
| Free Sizing Kit Rebate | Sizing Kit Extra | Included | Digital Only |
Your body has been talking. The ring finally listens.
Free Nationwide Shipping · Cash on Delivery · 30-Day Return Guarantee · Free Size Exchange
- 7 Medical-Grade Sensors
- 42 Continuous Biomarker Streams
- 250Hz Clinical Sampling Rate
- 7-Day Battery Life with Quick Charge
- 100m Water Resistance (10 ATM)
- Grade-5 Titanium + DLC Coating
GridsGear Ring R1 Gen 04
Titanium Smart Ring • Zero Subscription Forever