Solar String Lights,ideality 30led 20ft 2modes Waterproof Solar Powered Fairy String Lights Snowflake Style for Christmas Parties,gardens,outdoor,house,holiday Decorations,Christmas Tree Decorations 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 SUPER LONG WORKING TIME - Can continuously work more than 8 hours if the solar panel absorbs enough sunshine in the day 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.