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Small black Bluetooth ear-hook module with 2.5 mm pins and charging case

No Sew

No Sew KZ AZ09 Bluetooth 5.4 Ear-Hook Adapter

SKU CH-GMS1-8HFJS

Bluetooth 5.4 ear-hook adapter adds wireless audio to 0.75 mm or 0.78 mm pin IEMs, giving 6 hours play per charge and 30 hours total with the 800 mAh case

  • Headphone styleOn Ear
  • Power supplyBattery, aa, nonstandard battery, true
  • Connection2.5 mm
  • Wearing styleSingle Ear
  • Wireless technologyBluetooth
  • Battery pack6 h
  • Converts 0.75 mm and 0.78 mm wired IEMs to wireless in seconds
  • Bluetooth 5.4 delivers stable audio up to 15 metres range
  • Each ear-hook weighs only 4.5 grams for comfortable all-day wear
  • Six hours playback per charge with the charging case extending total use to 30 hours
  • Dual-channel transmission cuts latency for responsive gaming and media control

Bluetooth 5.4 Upgrade for Pin Earphones

This ear-hook adapter turns any IEM with 0.75 mm or 0.78 mm two-pin connectors into a wireless headset. It clips onto the existing cable sockets so the original drivers and sound signature stay unchanged. Each hook weighs 4.5 g and carries its own 50 mAh cell for up to 6 hours of playback.

Charging Case Extends Daily Use

The included case holds an 800 mAh battery that can recharge both hooks four times, pushing total listening time toward 30 hours. A full case refill takes about 2 hours and the hooks pair automatically when removed. Bluetooth 5.4 keeps the link stable out to 15 m with support for AAC coding.

Built for Owners of Detachable-Cable IEMs

Ideal for listeners who already own compatible wired earphones and want a cable-free option without buying new drivers. Not suited for headphones that lack two-pin sockets, for users needing active noise cancellation, or for anyone who prefers a single-piece true-wireless design.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $44.99
Pricier than about 68% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameROCCAT
Model nameKZ AZ09, AZ09
Product typeOn-Ear
Product colorBlack
Performance
Supported distance15 m
Audio & video
Headphone styleOn Ear
Wearing styleSingle Ear
Noise cancellationNone
Connectivity
Wireless technologyBluetooth
Ports & slots
Connection2.5 mm
Power
Power supplyBattery, aa, nonstandard battery, true
Battery pack6 h
Run time6 h
Charging time2 h
Built-in batteryBattery
Size & build
Product weight4.5 g

Questions about this item

How long does the 50 mAh ear-hook battery last before it needs a recharge?

The ear hook provides up to 6 hours of playback on a single charge.

Does the adapter get warm or make any noise during all-day use?

The module has no fan or moving parts, so it runs silently and stays cool.

Which wired earphones can I attach to the 0.75 mm or 0.78 mm pins?

Any IEM with a 2-pin 0.75 mm or 0.78 mm connector will work.

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