True Wireless Freedom (Bluetooth Connectivity) The boAt Rockerz 421 uses Bluetooth technology to connect to your smartphone, tablet, or laptop without messy wires. This gives you freedom of movement, whether you’re commuting, working out, or relaxing at home. Enjoy a stable wireless connection that keeps you connected without the hassle of cables. Long Battery Life for All-Day Use The headphones offer impressive battery life — often up to 8–10 hours on a single charge, depending on volume and usage. This means you can listen to music, podcasts, or calls all day without needing frequent recharges. Great for travel, long work days, and uninterrupted entertainment. Powerful & Balanced Sound Quality boAt is known for bass-rich and punchy audio performance, and the Rockerz 421 delivers strong sound clarity with deep bass, crisp mids, and balanced highs. Music lovers enjoy dynamic audio whether listening to pop, rock, hip-hop, or podcasts. Great sound enhances every experience — from workouts to travel playlists. Built-In Microphone for Clear Calls The integrated microphone allows you to take calls hands-free, whether you’re driving, gaming, or multitasking. Enjoy crystal-clear voice quality for calls and online meetings. Easy call controls let you answer, reject, or end calls without touching your phone. Specifications Brand: boAt Model Name: Rockerz 421 Color: Black Sabre , Bold Blue , Sage Green Driver Size: 40 mm dynamic drivers for rich Wireless Range: Up to ~10 meters Bluetooth Version: Bluetooth V5.0 Battery & Playback: Up to 8–10 hours of continuous playback on a full charge Microphone: Built-in microphone for hands-free calls and voice commands Controls: On-ear intuitive controls for volume, track change, calls, and play/pause Design & Comfort: Lightweight & comfortable over-ear fit , Cushioned earcups for long listening sessions Compatibility: Works with Bluetooth-enabled smartphones, tablets, laptops, and devices Build & Finish: Durable build with stylish design and color accents