Review on 🎧 TREBLAB E3 (2020) - Premium Active Noise Cancelling Headphones with 50H Battery Life, Bluetooth 5.0, and Built-in Microphone - Ideal for Work, Travel, and Sports by Jason Cox

I love the 50 hour battery life. It's important to note that using the noise-cancelling feature will likely reduce battery life by up to 30 hours. It doesn't sound nearly as good as my Aiwa Arc 1 blue-tooth headphones or my Sennheiser noise-cancelling blue-tooth headphones, but the TREBLAB E3's battery life is at least double that of AIWA and Sennheiser products . UPDATE: TREBLAB contacted me and said that "all headphones should be burned with dynamic drivers. Let the headphones play music at 75 inches. % volume for about 15 hours. This allows them to sound the way they were intended. In normal operation, if you don't want to wait, the sound levels out after a while. "I did it and now they sound great! who knew The rating has been changed to five stars.