teaching stick pen

teaching stick pen
Model No.:CTO9176
Description: Measurement:1.0*14cm; Usage battery: no battery Operation: the pen with a teaching stick, extend optionally. ...

teaching stick pen
Model No.:CTO9173
Description: Measurement:1.0*14cm; Usage battery: no battery Operation: the pen with a teaching stick, metal meterial, extend optionally. ...

teaching stick pen
Model No.:CTO9171
Description: Measurement:1.0*14cm; Usage battery: no battery Operation: the pen with a teaching stick, extend optionally. ...