Gearwoo 4-Digital DIY Clock Kits, LED Talking Clock with Speaker, PCB for Soldering Practice Learning Electronics +Transparent Case+ English Instructions, CR1220/CR1216 Batteries are NOT Included

* School Science Project: This product is DIY kits, not the end product! His Soldering Project requires certain foundation of basic electronic theoretical knowledge and welding and hands-on ability. * Easy installation: There are three installation instructions, attached with paper instructions, you can download the detailed electronic instructions yourself, and you can contact us to provide videos * Functions : Human voice clock, Alarm function; Automatic photosensitive, Temperature, date and week display, Night light, Multiple display modes * Parameters: DC 5V; come along with a USB power cable, plug in the USB charger to use it. * Perfect After-Sale Service: CR1220/CR1216 batteries are NOT included. Please feel free to contact us if you have any questions.