B07VJHP533 YONGNUO YN862C Wireless TTL Camera Flash Speedlite with 1800mAh Li-ion Battery Compatible with Canon 5D IV/5D SR/5D III/5D II/6D II/6D/7D/7DII/70D/60D/40D/80D/650D/550D/1200D/1500D/EOS R

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Adopts lithium battery power supply design, ultra-fast charging recycle system.
Can be used as a master/slave unit and supports radio wireless flash function.
High guide number and supports high-speed sync.
Support Auto/Manual zooming and wireless optical slave function.
Supports USB Firmware Upgrade