Color: Blue Speaker type: Bluetooth, Outdoor Connectivity technology: Bluetooth, USB Special feature: Wireless, Portable, Bluetooth Recommended uses for product: Outdoor Wireless Version: Wireless 5.0 + EDR FM Frequency Range: 87.5-108MHz Battery: Lithium Battery Audio Format: Mp3 Watts: 6W Input Voltage: DC5V 0.5-2A Product Size: 18*4.3*6.3cm How to pair two Bluetooth speakers with your phone? Turn both of them on and then long press Hands-free button on the two speakers for about 2 seconds until you hear voice prompt; The blue indicator light will flash rapidly and after 5-7 seconds the lights will stay on if these two speakers have been connected to each other successfully; Use your mobile phone or other device to connect to SPEAKER 5.0 through Bluetooth and then you can listen to music from two speakers simultaneously.