Official IELTS 20 Books include audio that can be listened to on devices like iPhones and smartphones. **Shipping:** Orders placed before 12:00 PM (noon) will be shipped the same day. **Packaging:** This product will be delivered in its original packaging. **Dimensions:** 16.6 cm x 23.4 cm Authentic IELTS 20 Books feature color-coded pages that highlight important exam points. These vibrant pages help you quickly grasp key information and significantly improve your exam preparation and score. **Note:** We do not recommend black and white copies with Chinese characters printed on them. Please purchase the official color edition books. Studying with accurate content will help you achieve a higher score.