QFX BT-300 - Technical Specifications; Power, Transducer, and Amplifier; Frequency Response and SNR; Physical Dimensions and Battery

Technical parameter
1.Power supply:5V DC，1A
2.Transducer：1.5”(40MM)*2
3.Power amplifier：3W*2
4.Frequency response：105-20KHZ
5.Signal to noise ratio：80db
6. Dimensions (diameter * height) 79mm*182mm
7.Battery capacity：3.7V/400mAh
8.Input connection：3.5mm
9.Play time：45-60 minute
10.Charging time：3 hour
11.Bluetooth transmitter frequency range：2.402-2.480GHz
12.Bluetooth transmitter function：0-4DBM
13.Bluetooth transmitter modulation：GFSK,TT/4 DQPSK,8DPSK