This camera PEN can only use disposable ink inside the package. 

how to use it: 
1. Standby mode press the button on the top for a two seconds until the RED lights up. When the red light keep be on, then it will be on standby mode. If memory card does not detect by the device, without any operation for 60 seconds at standby mode, It will shut down after the RED light flashes in 5 seconds. 
2. Record video press the button on the top for 2 seconds in standby mode The RED lights will flash off after 3 times and start to record. The LED is off during recording so people don't know that it's on. If you press the button once quickly again, The recording stops and the red LED will turn on and this indicates the pen is in standby mode. 
3. Take photo in standby mode, press the power button quickly, The RED light flashes one time, means it has taken a photo and save already. 
4. Voice recorder in standby mode, press the button on the top for 3 times the red light flashes one time starting voice recorder, 30 mines per File. 
5. Power off press the button on the top for a few seconds until red light off. The device is turned off. 

Specifications: 
video resolution: 1080P 
photo resolution: JPG 2560x1440 
pixel: 2. 0 Mega Pixel CMOS 
memory: build-in 16GB, max for 64gb 
battery lasting time: 70 minutes continuous
record modes: continuous record 
video format: AVI format USB 
interface: 2. 0 charging
voltage: 200ma,dc-5v 
charging time: 4 hours
dimension: 148x11. 5x11. 5mm includes 3 pen refills and USB cable for hard drive transfer. 

70 mins recording after fully charged

package include: 
1x SPY camera PEN 
1x User Manual 
1x USB cable
5x ink fills