📌LAB POINTS 3rd generation of Grado's award-winning audiophile headphones w/ wireless bluetooth connectivity open-back design for exceptionally detailed sound custom built drivers deliver legendary Grado sound built-in microphone winner of Editor's Choice & Best Overall Headphones from Popular Mechanics lightweight design, padded headband + soft foam earpads 1st ever wireless headphones from Grado made in Brooklyn "The GW100 are the worlds first open-back Bluetooth headphones. Their speaker housings and internals have been designed from the ground up, now working in tandem to notably diminish escaping sound by up to 60%. There is a design language that's seen throughout all of our headphones since we started building them nearly 30 years ago. The GW100 continues this, looking like it’s part of the family simply at a glance. These wireless Grado headphones are a milestone in our 65 year history." - Grado 🔎TECH SPECS Bluetooth Version: 5.2 Codec: aptX adaptive, AAC, SBC Working Distance: 10m Battery Life: up to 46 hrs (Based on 50% volume throughout playtime. Battery varies due to volume and musical genre) Charging Time: 2 hours Battery Capacity: 850mAH Frequency Response: 20Hz~20KHz Mic Sensitivity: 42dB +/- 3dB Transducer Type: Dynamic Operating Principle: Open Air SPL 1mW: 99.8 dB Nominal Impedance: 38 ohms Driver Matched dB: .05 dB 📦COMES WITH USB-C to USB-A charging cable 3.5mm audio cable Grado story-sheet Warranty