A9 LED Portable Mini Wireless Bluetooth Speakers for Phone PCDescription: Name: LED Bluetooth SpeakersModel: A9Audio Format :MP3FM: 87MHZ-108MHZTF Card: 8G (Not included)Signal-to-Noise Ratio: ≥70DbBluetooth version: Bluetooth 3.0Audio Classification: Sound CardAntenna: Connect USB or EarphoneBluetooth Effective Distance: About 30mAudio Input: Support Mini USBAudio output: Support 3.5mm HeadphoneWorking Voltage: 3.7V-4.2VFrequency: 20Hz-20KHzPower: 4Ω3WCabinet Material: PlasticWorking Time: About 50minCharging Time: About 180minCharging Voltage: DC 5VCharging Current: DC 500MANet Weight: About 159gGross Weight: About 185gItem Size: 61*61*62mm(L*W*H)Package Size: 62*62*78mm(L*W*H)Function:1) Support: Bluetooth、 TF card、 USB、 FM Radio、 Line in2) Support phone redial3) Bluetooth remote control about 30m4) It can support music formats: MP3、 WMA、WAV、 PE、FLAC5) High sensitivity FM radio with internal antenna.6) Material: ABS Plastic + Aluminum7) Built-in Li rechargeable battery 350mAH8) Battery can support play time: 50min  9) Support Hand-free when answer calling (with MIC)10) Auto Voice Prompt power on\/off and Bluetooth is connected and disconnected11) Four colors available options: Green、 Blue、 Pink、 WhitePackage included:1 x A9 LED Bluetooth Speakers1 x USB Cable1 x Manual