a bag it comes integrated with a microphone for phone calls and you can easily answer phone calls because of itthe inbuilt mic makes sure you have no hassles in switching devices or audio output when receiving a call on your phone and go handsfreesony srsxb12 extra bass portable waterproof wireless speakercompact and powerful the sony portable wireless speaker features extra bass for deep and punchy sound this speaker has a strong battery life of up to 16 hours and is also waterproof and dustproof for your peace of mindwith this speaker you can enjoy enhanced lowend tones from a speaker thats easy to carry from place to place it also has a builtin mic to let you enjoy hands free callingptron sonor bluetooth speakerptron sonor bluetooth speaker is perfectly compact and lightweight that can be carried around anywhere this efficient speaker has advanced bluetooth v42 chipset that lets you stay connected to the speaker from as far as 10m or 33 ft engineered for music lovers this speaker is a real treat with the super compact 40mm 3w highperformance speaker for impressive volume pure sound qualitythe high definition inbuilt microphone comes with voice prompts and you can answer callreject callcall the last dialled number seamlesslydisclaimer the times of indias journalists were not involved in the production of this article