Wireless Bluetooth Speaker Parameters:Bluetooth specification: Bluetooth4.2Support for Bluetooth protocol:Support L2CAP/A2DP/AVRCP, which is used to receive stereo audio signals, and can control the up and down music operation of the audio transmitting end through the protocol;Support HSP/HFP (Handsfree profile), with hands-free function, can carry out voice communicationWireless transmission range: 10MAudio noise ratio: ≥90dbBattery capacity: 1200mAhBuilt-in voltage: 3.7VNormal volume playback: 3HSpeaker specifications: ¢45mm *2Speaker power: 4Ω/5W*2Frequency response: 120HZ-20KHZSize: 72.6x72.9x178.7mmStand-alone weight: 490g (single unit)Charging voltage: 5V/500mACharging time: 3-4HWireless Bluetooth Speaker Features:1. Magic speaker system design, amazing dual powerBuilt-in low-frequency amplifier design, the mid-low frequency is more powerful, with better sound quality performance;2. Using advanced Bluetooth audio decoding chipSupport mobile phones, tablets, TVs and other Bluetooth devices to play music in pairs; Bluetooth transmission distance is greater than 10 meters;3. Support hands-free calling function, built-in high-sensitivity microphone, so that mobile phone calls have an incomparable and enjoyable call enjoyment4. Support U disk and TF card music playbackMP3 decoding, support full rate playback of MP3 format;5. FM automatically searches and stores stationsBuilt-in FM radio module, which can automatically search and store radio stations, saving time and effort;6. Support AUX audio input, provide you with computer speaker function;