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.
Long range bluetooth intercom designed specifically for motorcycles. Call handsfree on your bluetooth mobile phone, listen to stereo music or voice instructions from GPS. 4-way conference intercom to communicate with up to 4 riders. Sufficient Sound audio with integrated audio booster. 12 hours talk time, water resistant, crystal clear sound quality.