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.
A USB charging cable is included, but no such luck for a 3.5mm audio cable. Kudos to JBL, however, for making the charging cable a nice, useful length (just over three feet), instead of obnoxiously short like most cables that typically accompany even high-end Bluetooth speaker models.