Drivers = Two 1.5", 4 Ohm Drivers; One 3" x 1.5" Passive Radiator
Charge time: 3.8 hours
Compatibility
For Audio Playback: Smartphones, tablets and other devices that support Bluetooth wireless audio profile [Advanced Audio Distribution Profile (A2DP)] or 3.5 mm audio output.
For Phone Calls: Phones that support Bluetooth Hands-Free Profile (HFP1.5)