Peak Design Slide Camera Strap (Midnight Blue) SL-MN-3 Studio Accessories an XLD (eXtra Low Dispersion)

an XLD (eXtra Low Dispersion) and two LD (Low Dispersion) lens elements

3D and 4K video

and did I mention

SD300S has mobile phone Bluetooth APP control function

You can also compare all straps

Peak Design Slide Camera Strap (Midnight Blue) SL-MN-3 Studio Accessories an XLD (eXtra Low Dispersion)The most versatile pro camera strap in the world, the newly upgraded Slide can be worn as a sling, neck, or shoulder strap. Internally padded nylon webbing has a smooth side that glides over clothing in sling mode and a grippy side that prevents slipping in shoulder mode. Dual quick adjusters provide instant access and easy reconfiguration. Unique Anchor Link system connects quickly and dual points of connection keep your camera more stable than