{
  "id": "signal-ring",
  "name": "Vital Signals Signal Ring",
  "company": "Vital Signals",
  "category": "ring",
  "categoryName": "smart rings",
  "worn": "Finger",
  "url": "https://wearableindex.com/devices/signal-ring/",
  "dataUrl": "https://wearableindex.com/devices/signal-ring/data.json",
  "manufacturerSite": "https://signalring.com",
  "image": "https://wearableindex.com/images/signal-ring.jpg",
  "comparisons": [],
  "generations": [
    {
      "name": "Signal Ring",
      "year": 2026,
      "status": "preorder",
      "price": "$399",
      "priceUSD": 399,
      "summary": "Cuffless smart ring that takes direct systolic and diastolic blood-pressure readings from an optical finger sensor without calibration, focused solely on cardiovascular data.",
      "hardware": {
        "Biometric": [
          "PPG heart rate",
          "Blood pressure (cuffless)"
        ]
      }
    }
  ]
}