1. Material: ABS+ aluminum alloy 2. Surface technology: sun pattern + polishing + process pattern + vacuum plating 3. Size: 26.8*166mm, weight: 158g 4. Chuck range: 55-88mm 5. Maximum expansion length: 680mm 6. Connection method: Wireless connection 7. Applicable mobile phone: 4.7-6 inch mobile phone 8. Applicable scene: indoor and outdoor