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.
JBL Go Singapore. Small and Powerful. The JBL Go portable Bluetooth speaker is one of the most compact wireless speakers out there. Packed in simple plastic packaging that shows off the speaker in all its glory, the tiny JBL Go can fit in the palm of your hand, and weighs only approximately 130 grams.