It's a 110-240 Volt AC rapid travel charger that operates even with an empty battery.
It's compatible with all BlackBerry devices that use a MicroUSB charger, including:
Pearl 8220/8230, Curve 8520/8900, Curve 3G 9300, Storm 9500/9530, Storm 2 9520, 9630 Tour, 9650 Bold, 9700 Bold, 9780 Bold, Pearl 3G (9100+9105), 9800 Torch, Bold 9900/9930 .
The pack includes an AC adapter with removable clips for Europe and UK/Ireland outlet adapters.
It's an original Blackberry charger, so you can be assured that it will be safe to use and charge your device rapidly.