1.Outdoor waterproof speaker IPX6 2.Sensitivity: 600mV 3.Frequency response: 100HZ - 18KHZ 4.SNR: ≥70db 5.Distortion: ≤0.05% 6.Battery capacity: 3.7V 7.Bluetooth sensitivity: -90dBm 8.Built-in li-ion polymer 9.Working time :8-10hours 10.Battery charge: 3-5 hours 11.Remote operation:10 meters(without obstacle) Accessories: Micro USB chargeable cable / dual 3.5mm audio cable