Advanced Bluetooth 5.3：Advanced Bluetooth 5.3 technology that's compatible with devices with Bluetooth audio capability, Pick up the two headsets from the charging case, and they will be paired automatically. Then simply enable Bluetooth connection on your mobile phone to pair the device with your earbuds.
Transparent Mode：You can hear what you want to hear, which lets outside sound in so you can hear and interact with the world around you. You can clearly hear the announcement of the airline or subway and what is happening around you without taking off the headphones.
Active Noise Cancellation：Hybrid 3-layer Active Noise Cancellation. 1. Outward-facing microphone detects external sounds and counter with equal anti-noise to first cancel noise. 2. Inward-facing microphone listens inside the ear canal to pick up internal sounds and produce anti-noise again to cancel the left noise. 3. Ear caps prevent 90% of noise from going to the ear canal.
Call Noise Cancellation：TOZO NC9 Pro supports Call Noise Cancellation. which means that when the Bluetooth headset is used for a call, the chip inside the Bluetooth headset is used to filter the signal received by the call microphone to reduce the wind noise from the outside world so that the caller can hear it more clearly.
