Yongnuo camera / - Video LED video light ring light for macro shooting, etc. 60 LEDs +2 lens adapter 58mm and 67mm (Electronics)
the part is enough super for macros in the range up to 30cm. if you go closer, one can well each off rings. Who needs another adapter: the Cokin fit (Cokin P472 Adapter Ring 72mm P size). about the battery life I can not say anything.