Dimensions:  - Extendable rod length: 20cm – 98cm  - Flex height: 23.5cm – 100.5cm  - Phone clamp width without gasket: 6.3cm – 8.5cm  - Phone clamp width with gasket: 5.4cm – 7.9cm Material: Steel Capacity: 500g Battery: 45mAh Voltage: 5V DC Flex sections: 7 Built-in wireless Bluetooth with HID communication technology Rubber gasket insert used for smaller devices Compatible with iPhone 5， 5C， 5S， iOS Apple 4.0 and above， and Android 3.0 and above