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Description
Withings ScanWatch 2 Smart Watch, 42mm, BlackYour heart, taken care of: Take a medical grade ECG1 and pair it with Withings' Cardio Check Up for a full cardiologist review included in your free 1 month Withings+ subscription. Smarter temperature. Earlier Signals. ScanWatch 2 redefines temperature tracking 2. By continuously following your temperature overnight, it makes it easier than ever to spot elevations or shifts helping you see how your body changes from night to night. Your cycle,
- Your heart, taken care of: Take a medical-grade ECG1 and pair it with Withings' Cardio Check-Up for a full cardiologist review – included in your free 1-month Withings+ subscription.
- Smarter temperature. Earlier Signals. ScanWatch 2 redefines temperature tracking 2. By continuously following your temperature overnight, it makes it easier than ever to spot elevations or shifts – helping you see how your body changes from night to night.
- Your cycle, predicted throughout the night: Introducing enhanced temperature-based cycle tracking – By measuring your overnight temperature, ScanWatch 2 retrospectively confirms ovulation windows, periods – even irregular ones, and other shifts within your menstrual health.
- Your metrics boosted for stronger days and nights: Experience the most advanced activity and sleep tracking yet – now with enhanced accuracy and an updated REM sleep measurement to monitor every workout and rest with unmatched precision.
- Optimize your recovery and boost your energy levels: Thanks to enhanced tracking of sleep cycles and activity patterns, ScanWatch 2 powers your Vitality Indicator – leveraging HRV, temperature, respiratory rate, recovery, effort, and more – to give you a complete picture of your day-to-night wellness. Learn when to restore, boost your energy, and recognize when you need extra care – included in your free 1-month Withings+ subscription.
- Your heart's hidden rhythm: Overnight Heart Rate Variability (HRV) tracking measures the time between each heartbeat – supercharging Withings' exclusive Vitality Indicator, to assess your nights and daily recovery.
- Respiratory tracking with On-demand SpO2: Get a clearer picture of your health with on-demand SpO2 tracking – precisely follow your blood oxygen levels anytime, right from your wrist in only 30 seconds.
- Precision in every breath: Respiratory rhythm tracking provides advanced insights to help you stay aware of changes in your health over time.
- Don't miss a single notification: Maintain your style while staying connected. All your smartphone notifications appear directly on your ScanWatch 2 – so you never miss any important information.
- Includes: ScanWatch 2 FKM (fluorelastomer) wristband with stainless steel buckle; docking station (USB-C compatible); USB-C to USB-A cable included; quick installation guide in English, French, German, Italian and Spanish
- Connectivity: Bluetooth low energy
- Sensors: TempTech24/7 module; high dynamic range accelerometer; multi-wavelength PPG 16 channels; Altimeter
- Battery: Up to 35-day battery life; charging time: 2 hours; docking station (USB-C compatible)
- Color screen display: Grayscale OLED display; 14504 pixels, 282 PPI, 0.63 inch
- Materials: Stainless steel case; sapphire glass; stainless steel crown
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Arrived on time, in good condition, functioning as advertised.
Style: Data Transfer (10Gbps)
This was one of only three or four 4-port USB-C hubs I was able to find. The others IIRC were made by Acer, Belkin, and Rosewill. Of the four, only this one and the Belkin also had power-delivery capabilities, and this one was slightly cheaper.
The cable is a little short, only about 17cm. This can be good or bad depending on your use case. Personally, I think it's adequate, as it's plugged into my monitor, so not having a bunch of extra cable to tie up is a good thing, although it's a little odd to have it partially hanging rather than sitting flat on my desk. Again, not a bad thing, because it's quite light, so nothing is being stressed. However, people who want to plug it into a port on the rear of a tower will most likely need to purchase a USB-C male-to-female cable extension, keeping in mind that to use this hub to it's full capability, you would need a USB4 certified extension rated for 40gbps data & 100w power delivery.
Overall, I am pleased. I will most likely use this for a very long time, at least until USB-C completely replaces USB-A.
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Reviewed in the United States on July 20, 2025
★★★★★ 5
Perfect USB-C hub!
*If you are reading this and wondering if you should get it, or a competitor product that slightly lower in price... just get this one. You won't regret it.*
I already wrote a review, but I forgot to add photos. 1) I couldn't find a hub that had more than 2 USB-C ports; 2) This thing is tiny, doesn't demand attention, and built with aluminum. Not plastic, and doesn't feel cheap; 3) a life saver. I took velcro and mounted the little sucker under my MacBook mount. Now I could plug in my external drives, SD reader, and use the ports on my computer for other peripherals. One thing I was worried about was transfer speeds. I don't expect the fastest speeds ever, but I don't want to regret my purchase if it was going to give me more of a headache than a solution. To my surprise, the transfer speeds are fast, and feel faster than when they were plugged directly into my computer. One hard drive in particular always gave me trouble mounting. it would take forever. Since I purchased this drive it mounts in seconds.
I've used Satechi before, and their product have proven to me over and over to be reliable and of quality.
*If you are reading this and wondering if you should get it, or a competitor product that slightly lower in price... just get this one. You won't regret it.*
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Reviewed in the United States on February 25, 2022
★★★★★ 4
Works for me
This is plugged into a Macbook Air M2 and it supports a time machine drive, a 4TB solid state drive, a wired keyboard, and a free USB port for plugging various stuff into. In this use case, some other hubs don't work well with the Macbook; it keeps forgetting hub-linked drives are there, dropping them when asleep or not seeing them after a reboot. That has not been a problem with this hub. It's true I lose some of that Thunderbolt speed, but really, 5 GB/s is not that small a hole to put stuff through.
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Reviewed in the United States on November 23, 2023
★★★★★ 5
Leave the Laptop at Home - Content Backups
Style: Data Transfer (10Gbps)
I purchased this hub so I could leave the laptop at home and do backups of my GoPro Cameras and Drone footage to an SSD drive. I used FilePro Explorer app on my iPhone to set up tasks to do backups of my content from the SD cards to SSD drive. The one hiccup I encountered is FilePro Explorer (or this hub, not sure which) wouldn't recognize my GoPro cameras as a data source, so I had to remove the SD card from my GoPro Cameras, insert the card into another USB hub that had an SD card adapter (like the one here https://amzn.to/4dlkhMt ) and plug that into the Satechi Hub as another drive source, which it then recognized my SD card from the GoPro camera. So basically two small USB hubs and an App on my iPhone replaced what I would normally do with my laptop. Big weight savings when you're on a bike or motorcycle traveling.
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Reviewed in the United States on May 20, 2026
★★★★★ 1
Flaky and Fickle
Style: Data Transfer (10Gbps)
Worked great for a month. Went to plug in a spare ssd to back up files from tablet and it never has worked since. No data or power through any ports. The light turns on and stays solid but is just dead. Waste of my money for now it is outside of return and I am having troubles getting in touch with Satechi.
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Reviewed in the United States on December 21, 2025