TOZO NC9 Hybrid Active Noise Cancelling Wireless Earbuds ANC in retailer Ear Headphones

Product Name: TOZO NC9 Hybrid Active Noise Cancelling Wireless Earbuds ANC in retailer Ear Headphones
Overall good condition. Tested and works well. 【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 ear canal to pick up internal sounds and produce anti-noise again to twice cancel the left noise. 3. Ear caps prevent retailer 90% noise going to ear canal. 【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 saying around you without taking off the headphones. 【Built-in Dual Noise Cancelling Microphone】Double microphone noise reduction system suppresses environmental noise. A dedicated internal and two external microphones pick up your voice and isolate it from outside noise.