Official Seventeen Penlight Ver. 2.Supports BLUETOOTH control.Batteries are not included (requires 3 AAA alkaline batteries); Composition: OUTBOX (box); Light stick (main body) Decorative seal strap; How to use: Press the standard mode button to change the mode in the next order.ON: BLICK (flashing long) FLICKER (flashing short) OFF [Caution] Turn the battery cover on the lower level of the light stick and separate, the internal battery case will come out.Please check the battery case direction and the 3 battery directions carefully.If you rotate the handle of the light stick firmly, the outer plastic part will fall off, so you can turn it gently.When inserting the battery case into the battery cover, it will not work.Please use AAA alkaline batteries.Do not use manganese batteries.

• Package Dimensions ‏ : ‎ 28.5 x 12.9 x 12.1 cm
• Date First Available ‏ : ‎ September 18, 2019
• Manufacturer ‏ : ‎ Pledis Entertainment