Features: Product Model: HF69B Bluetooth amplifier board: Small standby heater, good stereo quality, suitable for small Bluetooth speakers. Output power: 6W + 6W. Stereo: dual-channel stereo Applicable speaker impedance: 6 ohm, 8 ohm (if the horn impedance is too small, there will be a phenomenon to amplify the volume then staccato) Supply voltage: DC 5V or 3.7V lithium battery (when the connection cable is too long or the battery is empty or the voltage is too low, the volume will be slightly higher than Staccato) Supply current: >1A (if the current is too small, turn the volume up, staccato phenomenon appears) Charging interface: when the charging interface is powered by the lithium battery, the supply voltage is 5V. And the mobile phone charger can charge a single lithium battery (the maximum limit voltage for the battery is 4.2 VDC through the charging management circuit.) Bluetooth interface model: PH2.0 2P Battery interface model: 2.54 2P Size: 7 x 4 cm / 2.76 x 1.57 Quantity: 1 Contains: 1 x HF69B Bluetooth amplifier board
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