Digital Multimeter and Bluetooth Speaker: play music by linking wirelessly to a Bluetooth device. Built in clock and alarm with wireless music playback, plus a temperature display for quick environmental checks. Backlit display and data hold function for easy value recording in dim conditions. Functions include AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency and Duty Cycle, as well as Continuity and Diodes tests. Use scenarios: - Electronics repair and development on the bench, with music playback to aid focus. - Field service for electrical wiring or automotive diagnostics, using the temperature display and multi parameter tests. - DIY projects at home, especially in low light, thanks to the backlit screen and data hold. This device combines practical measurement capabilities with convenient audio and time features, suitable for professional and hobbyist use without sacrificing clarity or reliability.