Battery is dry battery
Uses 2 AAA batteries (sold separately).
There may be differences between batteries and batteries, but the battery last for about 30 hours with the radio turned on.If you use it for 1 to 2 hours a day, you will be able to use it as it is half a month, but the watch function also has a drain of batteries, so please take about 3 days to replace the battery.
Battery drain may vary depending on the battery grade and season.
If you experience symptoms such as "Radio turns off and returns to clock display" or "LCD display is fully lighted" during use, this is a sign of running out of batteries.Replace your batteries with a brand new unused battery.
Although we ship it under adequate operation verification at the time of arrival, we will support you in the event of an initial failure that does not work properly.