Coby CMB-102-BLK Over The Ear Headphones with Built-in Microphone and Bluetooth Speaker (Black) Over the Ear Headphones Frequency Range: 20-20000Hz, 3.5mm Connection, Impedance: 32 Ohm In-Ear Headphones Frequency Range: 20-20000Hz, 3.5mm connection, Impedance 16 Ohm Bluetooth Speaker Output Power: 2.5W x 2, Transmission distance 33 feet, Li Ion Battery 500 mah Includes Over the Ear Headphones, In-Ear Headphones and a Bluetooth Speaker