1 Closer to the driver hands-free when answering the phone super convenient. 2 The biggest opening: 14CM fully support the current popular smartphone IPHONE Samsung navigator etc; 3 Elastic fixed design: using elastic fixed rubber belt steering wheel also does not affect the size of the installation. 4 Easy installation no additional tools it only takes a few seconds to complete it. 5 Security: this equipment is highly compact steering wheel can move no security risks. 6: Protection: the device is embedded soft silicone pad to protect your phone from scratches etc. 7 Made of wear-resisting high toughness environmental protection material can be used for a long time. 8 The device does not affect the wheel set of installation. Suitable for Motorcycle mountain bike etc.