Specification: Model: SP01 Connection: BT5.0 System: Android 5.0 and above, iOS 9.0 and above Handwriting resolution accuracy: 1600inch Focal length: no fixed value Image frame rate: 80HZ Writing speed: 20cmSec Writing angle: 360 degrees Indicator light: blue and red two-color indicator light Built-in lithium battery: polymer lithium battery 3.7V 250mAh Charging power supply: DC 5.0V Charging time: about 2 hours Use time: about 8 hours Digital Pen Size: 164mm (with cap) Digital Pen Weight: 17.6g Package Size: 29x25x4.5cm11.4x9.8x1.7in Package Weight: 1160g2.5lb 10 inch smart dot matrix d Size: 264 x174mm Colour: Black Thickness: 4.5mm Weight: 186g A5 dot matrix codebook Size: 227 x 146mm Cover: PU Paper: 100g rice white dalin paper Pages :160 (80) Note: 1. Our smart digital pen is compaitble with dpen APP and Ophaya APP. Both can realize all the functions with our writing pad and notebook. 2. The smart touch pen only work with the notebook and papers, ordinary paper is not available now. Packing List: 1 x Digital Pen 1 x A5 PU Notebook 1 x 10inch Writing Pad 1 x Data Cable 20 x B5 Paper 1 x User Manual 4 x Ballpoint Pen Refill 2 x Plastic Pen Refill