What is the difference between the B pin and C pin models?

B pin: compatible with KZ-ZST/ZS10/ES4/ZSR , C pin: compatible with KZ-ZSN/ZS10PRO/ZSX

Are these only 2 pin or also mcmx? C pin option shows 2 pin still

They currently do not offer MMCX. They have talked about it and if and when they do I will purchase 2 sets. I have 3 of the 2 pin versions and they work great!

my headphones stopped playing in both ears after a few months no matter what device im using, is there a way to fix it or something?

Have you tried resetting , resetting gives your headset and devices a refresh. If that's dosen't work replace them they are under warranty.

How long is the battery for kz az09 supose to last if connect to a kz zsn pro or similar?

Sorry for late reply ,it can last 6-8 hours , it can contect to KZ zsn pro ,it is available for type C KZ products ZSX/ZSN/ZSNPRO/ZSN PROX/ZS10PRO/AS12/AS16 .not available for type B KZ PRODUCTS ZST/ZST X/ZS10/AS06/AS10/BA10/ZSR/ES4 ,hope it help you

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KZ AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin)

Product ID: 367109931

Details

Brand
KZ
Color
AZ09-B Black
Ear Placement
In Ear
Form Factor
On Ear
Noise Control
Sound

💧IPV5 water-resistant design

📶Bluetooth 5.2 stable connection

🔋6h earhook battery life

NT$2064

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Description

🎧 Cut the cords, not the quality — wireless freedom meets pro-grade sound!

NEXT GEN BLUETOOTH 5 2 - Experience ultra-stable, low-latency audio with RTL8753 chip—perfect for calls, music, and gaming without dropouts.
ENDURANCE THAT KEEPS UP - Enjoy up to 6 hours on a single charge and 7 full recharges from the compact, magnetic charging case—stay unplugged all day.
DUAL CHANNEL GAME MODE - Use each earhook independently or together with dual-channel transmission; triple-tap to unlock high-performance gaming audio.
ERGONOMIC ALL DAY COMFORT - Designed to contour your ear perfectly, these lightweight earhooks let you wear glasses and move freely without fatigue.
SEAMLESS WIRELESS FREEDOM - Transform your wired IEMs into sleek, wireless powerhouses with a quick 2PIN gold-plated plug-in design.

The KZ AZ09 Bluetooth 5.2 Upgrade Cable Ear Hook converts compatible wired IEMs into wireless earbuds with advanced AAC audio encoding, IPV5 water resistance, and a powerful RTL8753 chip for stable, low-latency Bluetooth 5.2 connectivity. Featuring a 50mA earhook battery lasting 6 hours and an 800mA charging case with 7 full charges, ergonomic design for comfort with glasses, and dual-channel transmission supporting independent earhook use and a dedicated game mode for enhanced audio performance.

Specifications

ASIN	B0988YNTBS
Additional Features	water-resistant, wireless
Age Range Description	Adult
Antenna Location	Gaming
Audio Driver Type	Hybrid Driver
Best Sellers Rank	#142,435 in Electronics ( See Top 100 in Electronics ) #1,422 in On-Ear Headphones #5,611 in Earbud & In-Ear Headphones
Bluetooth Range	10 meters
Bluetooth Version	5.2
Brand Name	KZ
Built-In Media	Cable
Cable Features	Without Cable
Carrying Case Battery Average Life	42 hours
Carrying Case Color	Black
Carrying Case Weight	50 g
Color	AZ09-B,Black
Compatible Devices	Bluetooth-enabled devices
Connectivity Technology	bluetooth
Control Method	Touch
Control Type	Touch Control
Controller Type	Built-in
Customer Reviews	4.0 4.0 out of 5 stars (539)
Earpiece Shape	Rounded Tip
Enclosure Material	Copper
Headphone Folding Features	On Ear
Headphone Jack	No Jack
Headphones Ear Placement	In Ear
Item Weight	55 g
Manufacturer	yuanze
Model Name	AZ09
Model Number	AZ09-B
Noise Control	Sound Isolation
Number of Items	1
Specific Uses For Product	Professional
Style Name	Modern
Theme	Modern Wireless Audio Technology
Unit Count	1 Count
Water Resistance Level	Water Resistant
Wireless Technology	Bluetooth

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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NT$2064

Duties & taxes included

In stock

Sold byAmazon TaiwanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Taiwan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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