BoAt Stone 135 with 5W RMS, upto 11 Hours Playback & TWS Feature 5 RMS Bluetooth Speaker (Space Grey, Mono Channel) The speaker offers up to a total of 11 hours of playtime per single charge at 80% volume level.Get ready to be enthralled by the 5W RMS sound on Stone 135 portable wireless speakers.It supports TWS functionality, meaning you can connect two Stone 135s together and simultaneously play music on both of them for twice the impact.With a lightweight speaker that offers an IPX4 marked resistance against water and splashes, you can enjoy your playlists across terrains in a carefree and hassle-free way. You can enjoy your playlists via multiple connectivity modes namely Bluetooth, FM Mode and TF Card.You can control playback, adjust volume levels, activate default voice assistant, etc., with ease courtesy easy to access controls.The speaker also supports handsfree calling feature as it has a built-in mic as well.