Bluetooth Bicycle Speaker w/ Microphone and Mount. For Samsung Comment 3, Samsung Galaxy S 4 Active, Samsung Galaxy Ring, Samsung ATIV Odyssey, Samsung Galaxy Note II, Samsung Galaxy S III &More Digital Devices Play Music & Make Calls Via Bluetooth Splash Proof, Durable Bluetooth Speaker | Tightly Attaches to Bicycle Frame Adjustable Volume | Play/Pause Buttons | Comes with a Built-In Rechargeable Lithium Ion Battery; via Micro-USB Cable (Included) 3 Hours of Working Time | About 25-30 Hours of Standby Time Frequency Range: 80Hz ~ 20KHz | Sound Output 2.0 Amplifier Output