1 AAA Battery Needed before using. On/Off Button Design on the top of the pen. Two Pen Buttons can be customizable. P68 Pen Only Suitable for those Huion products: 420, H420, K56, H58L, 680S, GAOMON S56K DOES NOT work with INSPIRPOY-SERIES (Q11K, Q620M, G10T, H950P, H640P, H430P, H1060P ) and HS-Series(HS64, HS610, HS611, H320M), and GT-SERIES (GT-156HD V2, GT-185, GT-190, GT-191, GT-1901, GT-2201, GT-220 V2, GT-221), and Kamvas-series(Kamvas 12/13/16/22 Plus), Not work with All Huion Pen Display Monitor. Can not work on Phone/PC/Computer/Screen/iPad/Wacom tabletsor any other touch screen tablets Technology: Huion Electromagnetic Digitizer How to use Digital pen:
Unscrew the pen
Put an AAA battery in (battery is not in the package), + pole towards to the pen tip end
Press down Power on/off button, then pen works
Second pressing to power off for saveing power if you do not use it any more.

Notice:
1. Please make sure that your graphics tablet works.
2. Please make sure that you put battery to the right position.

Compatible with all Huion Pen Graphics Tablet:
H420, 420, 540, 580, K58, W58, H58L, H580, 680S, P608N, 680TF, H690, DWH69, DWH69E, H610, 1060PRO+, 1060PLUS,

Also compatible with other graphics tablet as follow:
UC-Logic / Lapazz WP8060
UC-Logic / Lapazz PF1209
UC-Logic / Lapazz Artistic Tablet 5540
Trust 16486
Trust 16447
Trust 15356
Trust 15357 (TB-6300) Sketch Design Tablet
MonoPrice 8x6
MonoPrice 4x3
Monoprice / Pickle 10x6.25
Medion / Tevion MD 41217
Manhattan 8"x6"
Manhattan 3"x4"
Iball Pen Tablet 8060U
Iball Pen Tablet 5540U
Iball Pen Tablet 4030U
Iball Design Tablet PF1209
Genius PenSketch 9x12
Genius MousePen i608
Genius MousePen 8x6
Genius MousePen / WizardPen 5x4