Allinone Digital Multimeter with Bluetooth Speaker Bluetooth music playback: wirelessly connect your device to play music directly from the meter, reducing device clutter and keeping your workflow focused. Builtin clock and alarm with wireless music playback: a convenient timekeeping feature that can play music through the BT speaker, helping you manage tasks and schedules while working. Temperature display: monitor ambient or target temperatures in addition to electrical measurements. Backlit display and data hold: the screen includes a backlight for easy reading in dim environments; data hold lets you capture and review the current reading without keeping the probe in place. Easy value recording: the data hold function helps you record the displayed value for later reference, enabling smoother documentation during tests. Multimeter functions: test and measure AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency and Duty Cycle, as well as Continuity and Diodes testing, among others. Practical compatibility: Bluetooth connectivity supports wireless music playback from compatible devices while you work on electrical measurements. Practical use in lowlight environments: backlit display and the overall design support use in dark or poorly lit spaces without compromising readability. 23 use scenarios Electronics lab or workshop: diagnose circuits and components by measuring voltage, current, resistance, capacitance, frequency and duty cycle; use the data hold to log readings; enjoy music playback through the Bluetooth speaker while you work, and rely on the builtin clock and alarm to manage project timelines. Field service or electrical inspection: perform AC/DC voltage and current checks, continuity tests, and diode testing onsite; use the temperature display to monitor ambient conditions or environmentsensitive measurements; keep track of readings with data hold, and stay on schedule with the integrated clock/alarm and wireless music playback. Education or DIY projects at home: students and hobbyists can learn electronics by practicing measurements (voltage, resistance, capacitance, etc.) while listening to music via Bluetooth; the backlit display assists in lowlight settings, and the data hold function helps capture observations for study notes.