【ของแท้】ลำโพงบลูทูธ Charge 4 ลำโพงบลูทูธไร้สายแบบพกพาก…

Product Details:Model: J BL Charge4Technical specifications:Wireless Bluetooth® version: 4.2Support: A2DP V1.3, AVRCP V1.6Sensor: 50 x 90mmRated power: 30W RMSFrequency response: 60Hz-20kHzSignal to noise ratio: >80dBBattery type: Lithium-ion polymer 27Wh(Equivalent to 3.6V 7800mAh)Battery charging time: 4 hours (5V/2.3A)Music playback time: up to 20 hours (due toVolume level and audio content)USB charging output: 5V/2A (maximum)Transmitter power: 0-20dBmTransmitter frequency range: 2.402-2.480GHzTransmitter modulation: GFSK, π/4 DQPSK, 8DPSKDimensions (W×D×H): 220 x 95 x 93mm