Bluetooth Mono Speakers

boAt Stone 300 portable Bluetooth speaker with 50mm driver and 1500mAh rechargeable lithium battery provides up to 6 hours of playback. The speaker has IPX7 waterproof and shock-resistant design.

Sony SRS-XB12 10 W Bluetooth Speaker, Wireless Extra Bass sound and Battery life up to 16hrs

boAt Stone Grenade Portable Bluetooth speaker comes with 1200mAh lithium battery provides up to 7 hours of music playback.  Along with wireless music streaming through Bluetooth (v4.2) speaker also supports AUX cable and SD card.

boAt Stone 230 portable bluetooth speaker provides a battery of up to 7 hours. The speaker Ipx 4 sweat and water resistant and provides bluetooth v4.2 connectivity with a range up to 10 meters. This portable speaker fits easily in your pocket