1. Material: aluminum alloy
2. Applicable mobile phone size: 4-6.5 inch mobile phone
3. Dimensions: 10.4 x 3.57 x 1.29 cm
4. Alloy metal material, sturdy and durable
5. Upgrade silicone plug, easy to install
6. Anti-vibration foam design to prevent noise
7. Small size, does not take up space