Smart electronic card Bluetooth audio speaker

Type: Bluetooth speakerConnection method: Bluetooth connectionInterface type: USBBattery capacity: 450MAFrequency response range: 100HZ-20KHZOutput power: 3 ohm 4WSignal to noise ratio: ≥75dBPower supply: built-in lithium batteryChannel: 2.1Playing time: 6 hoursExpansion storage: 32GBBluetooth protocol: 4.1Number of speakers: 2Effective distance: 15 metersFunction: card, waterproof, radio, dustproof, drop-proof, voice prompt, call functionOperation mode: buttonApplicable people: generalProduct model: SC208 wireless bluetooth speakerProduct specifications: 20*6.4*4cmPacking size: 22*7.2*4.6cmProduct net weight/gross weight: 265g/310gProduct color: black, red, blue, green, orange, silverOfficial standard: one SC 208 speaker, one charging cableMain body material: ABS plastic, oil injection, iron mesh, silicone padBluetooth version: RSA4.0Bluetooth name: BT-SPEAKERBluetooth distance: 10MBattery capacity: 1000mA/HOutput power: 5WSpeaker size: 40mmPower input: DC5VSupport mode: TF, USB, FM,