7 Ports vs 4-6 on most others! Patented Spirals attract and allow more birds to feed. Lifetime Warranty on workmanship and normal wear and tear. Aluminum and stainless parts. Locking lid prevents squirrels from getting to seeds. "Twist & Clean" (Patent Pending) easy-clean bottom comes off for easy cleaning. No screws! Wiring hanging cable included (150 lb test) ComeS completely assembled. Clear seed tray available.