Fitbit Sense Advanced Health Smartwatch - Soft Gold (Renewed)

This pre-owned or refurbished product has been professionally inspected and tested to work and look like new. Amazon Renewed is the destination where customers can find pre-owned, refurbished products. The process begins when a customer buys a new product, and then returns or trades it in for a newer or different model. That product is then inspected and tested to work and look like new by Amazon-qualified suppliers. Afterward, the product is sold as an Amazon Renewed product on Amazon. If the customer is not satisfied with the purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee.

The EDA Scan app detects electrodermal activity, which may indicate the body's response to stress. Additionally, the device has a built-in skin temperature sensor that logs your temperature each night, allowing you to see when it varies.

The band size options are as follows: Small, which fits wrists with a circumference of 140mm to 180mm, and Large, which fits wrists with a circumference of 180mm to 220mm.

The device can assess your heart for atrial fibrillation, a heart rhythm irregularity, and easily share the results with your doctor. However, the Fitbit ECG app is only available in select countries and is not intended for use by people under 22 years old.

The on-wrist skin temperature sensor tracks your nightly temperature variations, and you can also see your nightly blood oxygen levels at a glance with the collection of clock faces.

The device uses Bluetooth 5.0 radio transceiver technology and has an operating temperature range of -10° to 45° C.

The high and low heart rate notifications alert you if your heart rate seems above or below your average. The battery lasts for over 6 days, and fast charging gives you a full day's charge in just 12 minutes, although this may vary with use and other factors, and can be up to 12 hours with continuous GPS.

The built-in GPS feature allows you to track your pace and distance during runs, hikes, and rides without your phone. Additionally, the built-in mic and speaker enable you to take Bluetooth calls hands-free when your phone is nearby, although this requires more frequent charging.

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