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nIt is a wireless speaker simple that can be used with confidence even around the water waterproof. Waterproof performance is safe water shower it takes dropped or the bathtub while bathing so substantial IPX 5/7 grade. nManufacturer's part number: LBT-SPWP100 nDevice that supports handsfree profile "A2DP", call function: which devices can be connected: music features hardware, software, devices that support handsfree profile "HSP" "HFP", in any case, Bluetooth for must transmitter, etc., correspond to, respectively. nBluetooth performance: Bluetooth V2.1 + EDR nCarrier Frequency: 2.4 ~ 2.480 GHz