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Kalsten | Smartwatch with ECG, blood pressure, and sleep monitoring

Regular price $96.99 $190.00 SAVE $93.01 (49% OFF) Sale price
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Your intelligent all-in-one health companion

BIOWATCH is more than a watch – it is your personal health monitor on the wrist. With precise measurement of ECG, heart rate, and blood pressure as well as detailed sleep analysis, this smartwatch helps you actively keep track of your health. Complemented by smart notifications and durable design, BIOWATCH offers the perfect combination of well-being and everyday technology.

Why people love BIOWATCH

  • Real-time Health Metrics: ECG, heart rate, and blood pressure available anytime.
  • Sleep & Cycle Monitoring: Analyzes sleep phases and supports physiological tracking.
  • Smart Notifications: Receive calls, messages & app alerts directly on your wrist.
  • Durable & Comfortable: With IP67 water resistance and skin-friendly silicone strap.
  • Long Battery Life: Up to 10 days standby for continuous health tracking.

Product specifications

  • Battery Capacity: 130 mAh (up to 10 days standby)
  • Water Resistance: IP67 – splash & sweat resistant
  • Compatibility: iOS 8.0+ / Android 4.4+ / Bluetooth 4.0
  • Health Functions: ECG, heart rate, blood pressure, sleep tracking
  • Charging: USB charging port (magnet or clip depending on model)

What's in the box?

  • BIOWATCH Smart Health Tracker × 1
  • USB charging cable × 1
  • User manual × 1

Free standard shipping on all orders. No minimum purchase.

  • Ships to: United States
  • Processing: 1–4 business days (Mon–Fri)
  • Transit: 5–10 business days
  • Total delivery time: 6–14 business days
  • Order cut-off: 5:00 PM PST

You will receive a tracking number by email once your order ships. Please allow up to 48 hours for tracking to update.

See our full Shipping Policy.

You have 14 days from delivery to request a return.

  • Email support@open.shop with your order number to start a return.
  • Items must be unused, complete, and in their original packaging.
  • Return label: flat $9.99 USD, deducted from your refund — nothing to pay upfront.
  • Damaged, defective or incorrect items: we cover all return and replacement costs.
  • No restocking fees.
  • Exchanges: contact us and mention "exchange" — the new item ships once your return arrives.
  • Refunds are issued within 7 business days of inspection.

See our full Return Policy.

Questions about your order or our products? We're happy to help.

Open
Hooizolder 214
Drachten Friesland 9205CD
Netherlands

Email: support@open.shop

Customer Service:
Monday to Friday, 8:00 AM – 6:00 PM PST (excluding public holidays)

We reply to all messages within 24 hours on business days. Weekend messages are answered on Monday.

For quick answers, visit our FAQ page or use our Contact Form.