Great cost performance because it's USB-powered! ● Contents 　Main unit 　Power cable 　Instruction manual 　Box Overview ● USB [Power supply] ● Dimensions (Width) 690 x Height 92mm ● Weight (Main unit) Approximately 52g ● Power supply method: USB power (Not rechargeable.) ● Temperature settings: 3 modes (Red: Approximately 45°C / Yellow: Approximately 40°C / Blue: 38°C) ● Power: 5V USB A connector ● Cord length: Approximately 1.2m ● Power/Voltage: Power = 5-8W / Voltage = 5V ● Overseas specifications OK Please use it by supplying power from a USB port of a PC, etc.