Is it a patent source:no exposure control:4 levels of brightness adjustment Is it rotatable:no model:rk-12 Guide number:100 Applicable models:universal Applicable battery:Rechargeable time to market:2020 After-sales service:store three packs Flash range:20-200mm flash type:professional flash packing list:usb charging cable, color box, fill light brand:neutral Fastest shipping time:1-3 days battery capacity:150mAh large battery Product Size:85*12mm bill:Paid invoicing type:mobile phone fill light
