Features 1 Bone Conduction Technology Utilizes bone conduction to transmit sound without disturbing your ears 2 bluetooth 5 3 Ensures fast connection wide compatibility and low power consumption 3 32GB Large Memory Built in TF card with 32GB capacity for storing your favorite music and books 4 LED Display Convenient and clear LED display for easy operation and tracking 5 Timer Playback Off Adjustable time settings for automatic shutdown perfect for sleep regulation 6 Lightweight Design Only 38g designed to fit comfortably under your pillow without a sense of foreign body Specifications GeneralSpecificationModelQY09ColorGrey BlueMemory Capacity32GFrequency Response20 20KHzbluetoothbluetooth VersionV5 3Supported ProfilesHSP HFP A2DP AVRCPTransmitting Distance10mBattery ChargingBattery Capacity400mAhMusic Time15hStandby Time150daysCharging Time2hSizeWeightProduct Weight0 0380kgPackage Weight0 0800kgProduct Size103 28 5 14mmPackage Size160 50 30mmPackage list1 Speaker1 Charging Cable