This Sigma electronic flash is a reliable and high-quality option for Nikon photographers. The EF-500 DG ST NA-iTTL model offers swivel and tilt features, making it easy to adjust the flash angle and improve the lighting effect. This flash can be used in TTL auto flash mode or manual flash mode. Batteries not supplied. This flash requires x4 AA batteries. Quick dispatch and free UK tracked postage with Evri’s standard service. International postage with eBay’s Global Shipping Programme. Collection can be arranged from Olney, Northampton, Milton Keynes or Bedford.