By default, OPP bags are packaged. If you need box packaging, contact customer service. You need to add a box fee of about 0.5-1 yuan.

For long-term outdoor use, we recommend that you choose plug-in type male and female connections (this model is always bright without flashing, always bright mode)

plug-in type can be connected in series with about 10 sets (with flash and always bright)

battery Type 10 lights are 2 battery boxes, 20 lights and more than 20 lights are 3 battery boxes, no. 5 battery is needed, and the delivery is not equipped with battery

USB models cannot be charged, and can only be turned on after being plugged in all the time (power bank, cellphone plug, USB interface on the car)