Details Model - TG187 Size - 292*132*139mm Power - 50W Model - TG192 Size - 194.4*81*82mm Power - 20W TG187 Speaker function - Bluetooth version - V5.0 Wireless transmission range - less than 10M Audio noise ratio - ≥90db attery capacity - 4400mAh Built-in voltage - 7.4V Normal volume playback - 10H~12H Power - 4Ω/25W*2 Frequency response - 100HZ-20KHZ Product size - 292*132*139mm Charging voltage - 5V/2A 1. Adopt advanced Bluetooth audio decoding chip to support all Bluetooth device connections