The Blue Box from Sangean is an Ultra rugged digital tuning radio that is perfect for any job site, the beach, the lake, or anywhere you'd like to take it without the need to worry about it getting wet, it's rain resistant to JIS4 standard, it's also dust and shock resistance. You can connect your favorite streaming devise to the BB-100 with its built-in Bluetooth technology version 4.1 class II wireless audio streaming to bring your devise to life with the great sound that the BB-100 offers. In addition the BB-100 can be powered with 4 rechargeable "C" batteries (not included can be charged Inside the radio with its built in battery charger. It can also be powered with alkaline batteries or the supplied power cord. The Blue box is also equipped with an AUX-input to connect your non Bluetooth devise. A rugged rotary tuning and volume control and durable ABS body makes this a great devise at any outside job site.