Withings
✓Activity Trackers
Withings Activite Sapphire Glass Activity and Sleep Tracking Watch - Black
★★★★★3.2
$561.99
ViewPrice
$220.99
SIERDE Smart Ring for Women & Men, Sleep & Health Tracker Ring, Silver 13#
★★★★★
$220.99
Quantity
1
Worldwide shipping
Fast tracked delivery
30-day returns
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Thousands of happy customers
About this item
- The precision sensors deliver reliable data you can trust, while the hypoallergenic stainless steel body keeps your skin comfortable through workouts, showers, and everyday wear. With up to 5-7 days of battery life on a single charge, you can go a full week without reaching for a charger.
- The free companion app works with iOS and Android devices, giving you clear charts, trends, and personalized insights. No subscription, no hidden fees—just your health data, always within reach. Whether you're training for a marathon, managing stress, or simply curious about your sleep, this ring is designed to fit your life.
- Get deeper insight into your rest with sleep tracking that breaks down light, deep, and REM stages. This activity tracker ring also supports menstrual cycle tracking and temperature trends, making it a versatile wellness companion for daily routines, travel, and busy schedules.
- Charge your ring on the included magnetic dock for about 60 minutes to enjoy up to 7 days of battery life. The free companion app syncs your data automatically via Bluetooth, so you can review trends anytime. For best results, wear the ring on your index or middle finger and keep the app updated.
- This fitness ring works with iOS 15+ and Android 10+ devices via the free app, with no subscription required. Available in sizes 6–14; measure your finger before ordering to ensure a snug, comfortable fit. Confirm your device compatibility before purchase for the best experience.
Product details
Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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