Android 5.1, MTK6580, Quad Core 1.3GHz, 1GB RAM 8GB ROM, GPS WiFi Bluetooth 4.0 GPS Pedometer WiFi Heart Rate Monitoring.
Aliexpress
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Updated: 03-07-2025
Price history and price alert
Check out price history chart (for all/most countries) for NO.1 D6 1/8GB Smartwatch. The lowest price was: $42.06.
Price records source(s): Gearbest
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).