KZ AZ09Pro Bluetooth V5.2 aptX/TWS + Earbuds Hook with Mic Support/40 Hours Playback and APP Control for Standard 0.75/0.78mm 2PIN Connector (C PIN, Black)

My IEM became wireless with ease! This is a game changer. I've been using my IEM as I like it - wired amd wireless.

High performance mode is good, but you can't default it. Bluetooth performance average, gets choppy in areas with a lot of people.

Meets expectations. Feels expensive at this price point.

Za Bluetooth device for KZ IEMs😅 tested for 6 hrs straight listening. I received without user manual. Feature like tripple press for left and right isn't specified. Triple press left for boost bass and treble. Triple press right for low latency connection when connected to pc and gaming.

Produto chegou no prazo. Excelente módulo bloethoot! Conectou de primeira. Muito estável no meu smartphone. Não notei perdas significativas na qualidade do som em relação ao fone quando cabeado.

Lo que más destaca de este producto es su gran capacidad de batería, la batería con un uso continuo me ha durado entre 8 y 9 horas. La carga que te proporciona la caja también es buena y extiende la batería de los audífonos bastante, excelente producto.

The noise floor is hardly noticeable and I haven't experienced any connection issues in the past month compared to the original AZ09. It uses regular aptX not aptX adaptive but the sound quality is still solid. It's not listed in the manual but triple-clicking the left button enables a hidden high-gain mode that simply makes it louder. They also have a quirk where sometimes they will stay on and connected to my phone inside the case but just making sure they are seated properly on the charging pins has prevented that from happening again. Battery life is amazing compared to regular TWS earbuds. I use these continuously for 5-6 hours and my phone still shows 50% battery remaining. Unsure if that is correct but that's already more than the 4 hours I get with OnePlus Buds Pros with ANC on. I paired these with my Moondrop Arias but they will need modification since these are C-pin and the B-pin version is nowhere to be seen. The black part is silicone and the inner part is plastic so it is very easy to trim with a knife and file.