Dynamo is recharged by shaking the handle Batteries or direct electricity 30-60 minutes standby for approximately three minutes of winding DC AA x two batteries (excluded) AA x two pieces Ni-Cd rechargeable battery (included) DC jack-out for charging mobile DC 3V jack-in Mobile phone battery charger cable (included) Additional adapter upon request, suitable for model CDMA, GSM, 3G AM/FM radio Torch (LED flashlight in white color) Energy saving circuit FCC, CE approval Logo printing services available