Power: 74Wh / 3.7V, Charging Time: 6.5 hours with 2.1A input; 13.5 hours with 1A input, Output: DC5V 2.1A / DC5V 1A.
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Aliexpress
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Price history and price alert
Price history (for all/most countries) for ROMOSS Sense 6 Plus 20000mAh Power Bank is here. The lowest price was: $16.02.
Price records source(s): Gearbest
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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)).