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.
The Winner. UE Boom 2. Two years ago, the best Bluetooth speaker you could buy was the Logitech UE Boom. So itâs no surprise Ultimate Ears has done it again with the device's sequel, the Logitech UE Boom 2. The speaker still has your now-familiar cylindrical design, but that gives it great 360-degree sound.