The chime change to new style from 2020.7.1,the old version chime is still in stock in Russia,Spain,Poland warehouse,Please know this.the newest version use the “Aiwit” app to connect to the wifi, the older version use the "tosee" app to connect the wifi,please know about this, when you get your product ,please check the instructions first, it shows you how to conenct it.The set 1 does not contain batteries inside, you can buy 18650 batteries(not 3a batteries ) in your local store or directly buy other set which include batteries in this product.The chime in the set3,set4,set5,set6 is defaultly EU plug,if you want any other type of the plug of the chime,you can leave a mesage to us in your order .It support 5V 1.5A DC power by USB or 12-24V AC power,if you want to connect it to a 220v or 120v AC power,you should purcahse a adapter to use it,we sell it in our store.166-degree high definition wide-angle lens● The video resolution Up to 720P 30pfs● Three 18650 specification batteries, which are rechargeable in the doorbell with a USB cable connect to the electric power.● All 18650 batteries power supply, quick start, low power consumption.● Wireless connection (only support 2.4GHz, not 5GHz), Please connect to 2.4GHz WiFi, not 5GHz. If you are not sure about the WiFi, please contact your ISP (internet service provider) to confirm● Long standby time 6-8 months (standby mode)● High and good resolution of the image● Support five modes (infrared night vision, backlight compensation, strong light fitting, Fast motion, wide dynamic), 3 kinds of wake-up mode (mobile phone active wake-up, doorbell button wake-up, PIR body detection wake-up)● Support duplex intercom, voice real-time dialogue,● P2P transmission, safe and reliable, PIR mobile alarm● Max support 32G TF SD card storage, historical data local preservation, replay at any time● Should you have any questions, feel free to con
