Plugs directly into the phone or desktop charger stand. Internal chip manages charging process to prevent overcharging and maximize charge capacity. Charger specifications are the same as the original charger that comes with the PDA phone. Plugs directly into the phone or desktop charger stand. Internal chip manages charging process to prevent overcharging and maximize charge capacity.HANDSPRING DSC-51F-52P U.S. Switching Power Supply (Original) is the alternative to the International version 3172ww. Light weight and compact this unit is for US use only and adapters are not included.DSC-51F-52P Switching Power Supply (Home Charger) for your cellphone is a convenient thing to power up your phone. Lightweight and easy to carry around.Compatible with: Tungsten E2 & T5 and Treo 650 680 700ww 700p 700w 700wx 700 750 & 750v smartphones only