For Canon EF 17-40mm f/4L USM Lens Fixed Bracket Sleeve Filter-Lens Adapter Battery life: approximately 5 hours

Battery life: approximately 5 hours

can install microphones or cellphone

Durable and not easy to scratch

and the clamping is stable without falling

SCHOTT optical glass is high-definition grinding

For Canon EF 17-40mm f/4L USM Lens Fixed Bracket Sleeve Filter-Lens Adapter Battery life: approximately 5 hours1. Camera USM lens sleeve replacement part. 2. Repair and fix your broken or unusable item with it. 3. Each item has been checked and in good condition before shipping. 4. Completely fit and work. 5. Professional installation is highly recommended. We will not be responsible for any damages to your camera that you may cause during the changing of replacement parts. Specification: Package Weight One Package Weight 0. 10kgs 0. 23lb One Package Size 15cm