(TrendHunter.com) Partaking in a conference call on a smartphone usually means holding the device for extended periods, so the Rayz Rally Pro portable speaker and stand is designed to help change this. The unit works... (TrendHunter.com) Partaking in a conference call on a smartphone usually means holding the device for extended periods, so the Rayz Rally Pro portable speaker and stand is designed to help change this. The unit works...