Yongnuo Flash YN585EX P TTL Wireless Flash Speedlite for Pentax K 70 K 50 K 1 K S1 K S2 K3II K5 K50 KS2 K100 Camera|ttl flash|yongnuo ttl flashyongnuo ttl - AliExpress
Amazon.com : Opteka VLB-1 "C" Shaped Adjustable DSLR Digital Camera Flash Bracket Accessory Mount Holder Attachment for Pentax K-01 K01 K-3 K3 K-5 K5 II IIs K-7 K7 K10 K10D K20 K20D