Fitbit Inspire 3 Midnight Zen-Black

This is the #1 and most popular heart rate monitor model on Amazon.
It has been used for 1 year, but there are no major scratches or stains.

All accessories are included, and the short wristband is unused.
I used the long one, so if you're concerned, you might want to purchase one from the manufacturer.

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Top Highlights
Brand Fitbit
Material Silicone, Plastic
Color Midnight Zen/Black
Compatible Devices Android 10 and later, Apple iOS 15 and later
Screen Size 0.74 inches
Product Dimensions 39 L x 19 W x 11 H mm
[Up to 10-Day Battery Life] Battery lasts over a week. [High/Low Heart Rate Notifications] Fitbit will notify you if your resting heart rate falls outside your normal range. *This product is not a medical device.
[Activity Reminders] Have you been sitting for too long? Your Fitbit device on your wrist will vibrate to encourage you to walk. [View Calls, Text Messages, and App Notifications] Stay up-to-date with just a glance at your Fitbit device. No need to take out your smartphone, so you can focus on the present moment. Available when your smartphone is nearby.
[Menstrual Cycle Tracking] Track your periods and symptoms, estimate ovulation, and understand your cycle patterns with Inspire 3 and the Fitbit app. [Smart Wake Alarm] Wake up feeling refreshed and start your day with your Fitbit device vibrating during your optimal sleep stage.
[Fitbit App] From tracking exercises, sleep, and nutrition, to checking health metrics, and accessing workout videos and meditation content, it's all possible within the app.
[Accessories & Clock Faces] Customize your look by swapping out bands and clock faces. With the clip holder, you can wear your Inspire 3 on your shirt, pocket, or tank top. Accessories sold separately.