The highest grade mono solar cells lead to efficiency of this solar charger up to 21% efficiency, while most panels in the the market is 15% or even lower. The higher efficiency it means you will get higher power based on same size and same sunlight condition. EFTE laminated offer strongest guarantee, ETFE is a new technology material, due to the super performance of waterproof and durable, It used to be main material on "Water Cube" in Beijing Olympic Park.When the solar charger is laminated ETFE film, it will be high better than normal solar charger at waterproof, scratch proof and corrosion proof. Therefor, when you using at outdoors, rugged environment or weather, ETFE solar charger is better choice. Multiple protection include short-circuit protection, over-charge protection, over-heat protection etc. To make sure more safe when you are using it to charging your device. Of course this solar charger has been certified by CE FCC RoHS ISO9001 EMC etc.
International highest level certification agencies. At last, 18 month guarantee period and worry-free customer care for you.Solar type: high efficiency mono solar laminated with ETFE film. Waterproof: IP67(except the controller). Expand size:64230013mm/22.214.171.124inch. Compact size:253mm300mm13mm/9.911.80.5inch. Net weight:0.6kg/1.3lb. Gross weight:0.76kg/1.67lb. 1x 21W solar panel charger. 1x USB cable for Android. The item "Waterproof Solar Panel Charger Outdoors Solar Chargers for iPhone 7 8 X Xr Xs" is in sale since Monday, June 22, 2020. This item is in the category "Mobile Phones & Communication\Mobile Phone Accessories\Chargers & Docks". The seller is "apollonoslimited" and is located in Shenzhen. This item can be shipped worldwide.