Christmas Decoration Lights,ideality Solar String Lights 30leds 20ft Snowflake Outdoor Decorative Fairy Lights with Light Sensor for Garden,house,yard,tree (Blue) SUPER LONG WORKING TIME - Can continuously work more than 8 hours if the solar panel absorbs enough sunshine in the day UNIQUE LIGHT-CONTROL TECHNOLOGY - It is using solar energy power supply to ensure automatic charging during the day with enough sunshine, while in the evening turn on automatically for lighting EASY TO OPERATE,WATERPROOF AND SUN PROTECTION - Suitable for indoor and outdoor use IDEAL FOR ALL DECORATIONS - Like garden, stage, patio, lawn, porch, gate, yard, parties, holiday, Christmas, x-Mas tree, kid's bedroom, house etc. Especially the snowflake lights is good for Christmas decoration to create romantic holiday atmosphere 30LEDS 20FT ,ONLY 2 BUTTONS FOR SWITCH CONTROL- one is Mode ( steady/ flash mode convert), the other is Power On/Off, after switch turned on, can automatically light control and charging