0.8 Inch Display Screen Digital Tube WiFi Clock Module Automatic Clock DIY Digital Electronic Clock
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All OK. No battery.
sent as a giftBeautiful stylish product arrived in 15 days
ok
Its full OK.
Very nice and visible medium sized display. Can be used without WIFI, but it uses DS1302 chip which is not super accurate. In normal conditions, it would have somewhere between 20-40 seconds error in 10 days (depending on the crystal oscillator). I suggest keeping it connected to WIFI for best accuracy and placing a battery inside in case of a power outage. Power it with any 5V charger or power supply using a micro-USB port. There are soldering holes for positive and negative inputs on the PCB in case you don't want to use a micro USB port.
The module arrived with no CR1220 cell for memory backup.
Received in good condition & working perfectly. The delivery takes much more time.
Small, light. Works good.
open-heart operation is better a cache