Research In Motion's slim and lightweight BlackBerry 7100-series handset, touted as 'the best messaging phone in the business', will make its debut in Hong Kong this month through cellular network operators 3 and CSL. With its stylish candy bar design, the 7100g model for Hong Kong serves as an integrated phone, wireless e-mail system and data organiser. It supports 'push' technology, in which e-mail from a user's desktop computer is automatically pushed to the device. The new BlackBerry also handles all four global GSM frequency bands for full international coverage and roaming.