By this pan on Amazon link - https://www.amazon.in/dp/B00FFY8DG4/ref=cm_sw_r_cp_awdb_t1_h29PAb7Z6BBZ2
Real Working Pen with Video and Sound
Recording
Bulit-in rechargeable Lithium-ion battery
Up to 32GB External Memory (micro SD /TF not included)
Video Resolution: 720 x 480@30fps, AVI Format, charge it 2 hours before using the product
It supports only4gb,8gb ,16gb & 32gb microsd memory card.
Product information
Brand mono
Package Dimensions 18 x 9 x 4 cm
Batteries Included No
Batteries Required No
Battery Cell Composition Lithium Ion