final --> for primitives --> value can't change. for non-primitives --> you can't change the reference and point it to another object. Note : It is different from immutability.
Hands down, the Bluetooth speaker with the longest battery life is the Fugoo. It offers up to 40 hours of battery life, nearly twice the battery life of other leading Bluetooth speakers in this category. Given how long its battery lasts, you might even forget that the Fugoo needs to be plugged in to charge.
CES 2014: Dalek Bluetooth speaker is world's loudest. Massive Audio has made the world's largest and loudest Bluetooth speaker in the shape of a Dalek from Doctor Who. I'm Jason Jenkins for CNET at CES. Now as public assistance go, this one gets my vote. Massive Audio has hand built the Dalek, a life size Dalek that also doubles as the world's loudest and largest Bluetooth speaker. -Exterminate.