A9 Wireless Bluetooth Speaker

A9 Bluetooth wireless speaker Compatible with: MP3, TF/Micro SD Card Supports: Bluetooth, Hands-free Calls, Loudspeaker, Microphone, TF Card Music Playing   Functions: AUX Function,Songs Track  Interface: ,Microphone,Mini USB,TF Card Slot Bluetooth: Bluetooth V2.1 Speaker Impedance: 4 ohm Transmission Distance: W/O obstacles 10m Power Output: 3W Freq: 90Hz-20KHz Battery Capacity: 400mAh Charging Time: about 2 hours Working Time: Medium volume 2-3 hours Battery Type: Lithium-ion battery Operating Voltage: DC3.7V-4.2V Power:4Ω 3W SKU:1005003505909176