This is a grip strap for the Power Battery Holder HLD-10 / HLD-9 / HLD-8 / HLD-7 / HLD-6. It improves the hold when the battery holder is attached. It ensures comfortable operability and allows easy operation of buttons and dials. You can insert and remove the battery and media while the strap is attached, so you don't need to remove the strap each time. It can be used with a shoulder strap, so you can hang it around your neck when moving.