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Products from the USA may come with an input voltage of 110V–120V, requiring a step-down transformer. Check the device wattage to select the correct power converter.
Item Type: Power Amp Module Voltage: 3.7V-5V Current: 1.5A-2A Power: 5W + 5W For Bluetooth: 5.0 Speaker: 4Ω/3W (not included) Screw Hole Diameter: Approx. 1.6mm / 0.1in Size: Approx. 40mm / 1.6in 22mm / 0.9in 27mm / 1.1in 34mm / 1.3in
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