VOLUME BASS + MID + HIGH Standalone Yes 100hrs Playtime Weight 550g Bluetooth Link-up + Receiver Mode Charge Out Yes Charge IN 4-5 hrs App Compatible Yes VOLUME BASS + MID + HIGH Standalone Yes 36hrs Playtime Weight 312g Bluetooth Link-up (only 2) + Receiver Mode Charge Out No Charge in 2.5-3.5 hrs App Compatible Yes VOLUME BASS ONLY Standalone No 80hrs Playtime Weight 875g Bluetooth No Charge Out Yes Charge in 4-5 hrs App Compatible No