Product Name: Solar Charger with Higher Solar Energy Conversion Rate Professional Multi-Layer ETFE Solar Panels to Output Power and Voltage 5V 21W Model NO.: Sol-18000 Accessories: Extension Cord Application: Mobile Phone Charger, Laptop Charger Flexibility: Portable With LED: Without LED Condition: New Certification: RoHS, TUV, CE Energy: Solar Lights Voltage: 5V High Conversion Rate: 23% Solar Panels: Sunpower Monocrystalline Silicon Slice Trademark: OEM Transport Package: Carton Specification: 20W, 40W, 60W, 100W, 120W Origin: China HS Code: 3818001900 Product Description Solar charger with Higher solar energy conversion rate Professional multi-layer ETFE solar panels to output power and voltage 5V21WType of solar cells: SUNPOWER high quality ETFE multi-layer solar panel.Peak Power: 15W,21W,40W,50W,60W,80W,100W,120W and so onWorking temperature:-40ºC- +60ºCConversion rate of Light-Electric: 22%-25%Type of the Core: non batteryDetails specification of 18V50WDetails specification of 18V100WFeatures:-Adopt SUNPOWER high quality solar panel-Conversion rate of Light-Electric: 23%, High efficiency of charging-Voltage regulation output-Smart charging system -ios Auto restart system-Adopt PET Laminate technology and Sand grinding process to ensure the durable and protection from scratching-Non battery-Waterproof, dustproof and shatter-resistant