1. Portable power bank, 3-in-1 power bank, multimedia, Bluetooth headset, 2.8-inch screen, casual games, multi-functional multimedia 2. Multi-functional device charging, direct charging of multiple devices at the same time, built-in 8000mAh large-capacity battery for long-lasting battery life, can be used for emergency charging of mobile phones 3. Multi-functional multimedia with various practical functions, Bluetooth camera/casual games/flashlight/weather/music and other entertainment functions 4. Beautiful and pleasant music with you, the bass of the Walkman is transparent and thick, and the treble is loud 5. Portable game console, 2.8-inch touch color screen/classic mini-games Color: black/white Screen size: 2.8 inches (with charging compartment) Use listening time : The charging compartment can be used continuously for 7-10 days without charging other devices Communication distance: about 10 meters Battery capacity: 40mah (earphones) 8000mah (charging box) Language: (default) Chinese/English/French/Spanish/Portuguese/Russian/German Turkish/Persian/Polish/Arabic/Vietnamese/Thai/Indonesian/Indian/Japanese/Korean Charging interface: Type-C Frequency response range: 20Hz-20KHz Material: Plastic Weight of a single set: 320g Packing method: boxed Contains a single set: Bluetooth headset*1 Instruction manual*1Instruction manual*1