Specification:Brand: ROCKMaterial: ABS +PCColors: White、 Black、 Red、 PinkProduct dimension: 30X44.5X5.5mmCompatible with: All mobile phoneFeatures:1. It is durable in use.2. It is tight and anti-skid.3. It is small and easy to use.4. It is compatible with various kinds of smart digital devices.Package included:1 x ROCK 360 Degree Rotate Finger Ring Buckle