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Small black rectangular recorder with rounded edges, magnetic back, built-in speaker and 3.5 mm headphone jack

MDalong Black-Z21-128 128GB 3072kbps Voice Recorder

SKU CH-B1M0-XM9DV

A 128 GB voice recorder capturing 3072 kbps audio with DSP noise reduction, a built-in speaker, magnetic mounting and 72 hours of continuous recording

  • Battery runtime3 years
  • Storage media128 GB
  • ConnectionHeadphones: 3.5 mm
  • Battery pack0.03 lb, 3 years, lithium ion, 0.44 Wh, 1
  • DetailsSize: 128 GB, Brand: MDalong, Color: Black, Style: Mini and
  • Product dimensions0.5 L × 0.95 W × 2.05 H inches
  • 128 GB stores up to 9 860 hours of recordings
  • 3 072 kbps capture quality with DSP noise reduction
  • Magnetic body attaches to metal surfaces for hands-free use
  • 72-hour continuous recording on a single charge
  • Built-in speaker and MP3/WAV playback for instant review

MDalong Black-Z21-128 voice recorder

The MDalong Black-Z21-128 is a 128 GB digital voice recorder designed for students, interpreters and workplace professionals who need reliable, high-capacity audio capture in a compact form. Its 3072 kbps recording rate and DSP noise reduction aim to deliver clear sound for lectures, meetings and personal notes.

Magnetic mounting and built-in speaker

A strong magnetic back lets you attach the recorder to desks, cars, refrigerators or other metal surfaces so it stays in place during hands-free sessions. The integrated Hi-Fi speaker and one-touch mode switching allow immediate playback or music listening without headphones, while USB 3.0 and OTG connectivity enable direct file management on smartphones and PCs.

128 GB storage for 9,860 hours of recording

The internal 128 GB memory holds up to 9,860 hours of audio, removing the need for external cards and ensuring you never run out of space during long projects. Continuous recording reaches 72 hours on a single charge, with up to 90 days of standby time.

How it compares

Measured against everything we stock in Digital Audio & Voice Recorders, at today’s prices. Recalculated every night.

Price $41.99
Cheaper than about 60% of the 321 comparable items (median $49.99).

Specifications

Product
Brand nameMDalong
Model nameBlack-Z21-128
Storage
Storage media128 GB
Ports & slots
ConnectionHeadphones: 3.5 mm
Power
Battery runtime3 years
Battery pack0.03 lb, 3 years, lithium ion, 0.44 Wh, 1
Size & build
Product dimensions0.5 L × 0.95 W × 2.05 H inches
Product weight0.1 lb (0.05 kg)

Questions about this item

Will the 128 GB storage ever need replacing or can I just keep adding files?

The built-in 128 GB memory is fixed and not user-replaceable; once the 9860-hour capacity is full you must offload or delete recordings to free space.

What stops me from recording continuously for days at the 3072 kbps setting?

Battery life limits continuous recording to 72 hours before a recharge is required.

Does the recorder get hot or noisy if I leave it running all day?

The device has no fan and uses solid-state storage, so it runs silently and stays cool during extended use.

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