Sauna-Specific 15-Minute Timer

A 15-minute sand timer engineered exclusively for sauna cabins, with auxiliary 5- and 10-minute indicators. Overall size: 22 cm × 8 cm, weight: 380 g. Frame crafted from kiln-dried hardwood; viewing chamber made of 4 mm thick tempered glass; calibrated sand sealed with heat-tolerant adhesive. Accuracy verified at ±30 seconds under controlled sauna-like conditions (85°C, intermittent steam). Includes two stainless steel screws and a custom-fit vertical mounting strip that fits snugly behind the timer body for zero-protrusion installation. No moving parts beyond sand flow — no gears, no batteries, no firmware. The wide, flat base and balanced weight distribution ensure secure wall mounting without wobble or resonance, even on lightweight timber cladding. Internal sand volume is optimised for consistent flow rate across temperature ranges typical in Finnish, infrared, and steam saunas. Intended for daily ritual use: pair with hydration tracking, post-sauna cooling protocols, or breathwork timing. Its simplicity supports habit formation — turning time management into an intentional, sensory part of the sauna experience rather than a technical interruption.