A 3h30 countdown timer in 4K with start/end beeps and a neon green grid design—clean, high-contrast digits for study, focus, deep work, long workouts, classroom use, and cooking. Minimal visuals keep your attention on the task—no clutter, just time. Audio cues Start: 3 short beeps + 1 start beep (timer begins immediately after the final beep) During: complete silence (no background noise) End: 3 warning beeps + 1 final beep Why 3h30 (210 minutes)? Deep Work — substantial block for drafting, editing, or batching Study Sessions — extended reading + recall, exam prep Endurance / Mobility — long sessions, yoga flows, steady cardio Cooking & Prep — slow bakes, steeps, cooling/resting phases Time-Blocking — one distraction-free window to finish meaningful work What you get ✅ 4K Ultra HD — sharp, clean digits ✅ High contrast — bright numerals on a dark field ✅ Silent countdown — no hums or loops ✅ Clear start & finish beeps — audible, not aggressive ✅ Retro-futuristic green aesthetic — stylish and functional More like this Explore the Neon Green Grid series and our Electric Pink Power collection—timers from 30 seconds to 10 hours in consistent 4K visuals. @Chronodown publishes clear, reliable timers by duration and style, updated regularly. 🔔 Like & Subscribe to @Chronodown for minimalist timers for study, workouts, cooking, and deep work. 💬 Tell us how you use 3h30—we’ll prioritize popular requests (durations, beep styles, silent versions). #3Hour30MinuteTimer #Countdown #StudyTimer #Focus #Chronodown