Philips BT55A/00, 1.0 channels, 1.5" (3.8 cm), 2 W, Wireless, A2DP, AVRCP, HFP, 393.7" (10 m) Philips BT55A/00. Audio output channels: 1.0 channels, Driver diameter: 1.5" (3.8 cm). RMS rated power: 2 W. Connectivity technology: Wireless, Bluetooth profiles: A2DP, AVRCP, HFP, Bluetooth range: 393.7" (10 m). Product type: Mono portable speaker, Product color: Blue. Recommended usage: Universal