12 hours / 24 hours, 3x AAA batteries.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Smart Digital Alarm Clock Black White LCD Display with Temperature Calendar Timer Led Light for Bedroom Office (Without Battery) | $10.60 | – |
Click here to search by yourself. Here are coupons that you can use.
Updated: 03-07-2025
Price history and price alert
Do you need price history chart (for all/most countries) for Timer Calendar Temperature Alarm Clock White? There we go. The lowest price was: $5.34.
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)).