Description: Functions: Bluetooth connection, plug wire connection Bluetooth version: 3.0 Shell material: Plastic supported formats: TF card, U-disk reception distance: 10 m and below output power: 3W x 2 External Magnetic Speaker: 4Ω 3w Input sensitivity: 400mV resolution: ≥ 90dB Signal to noise ratio: ≥ 80dB Operating Voltage: DC 5 V Specifications: Amplifier loudspeaker power: 5W Support mode: wireless Bluetooth/TF card/AUX Capacity: 1000 mAh Charging time: 2h-2.5h Working hours: (maximum sound) about 10 hours Give you a different experience, let you feel the retro style Package Included: 1 x Bluetooth Speakers 1 x usb cable 1 x audio cable