WINTACT WT8821 Oxygen Detector Independent Oxygen Gas Sensor Warning-up High Sensitive Poisoning Alarm Detectorspecification 1. Measurement range: 0~25% VOL 2. Maximum overload: 30% oxygen 3. Response time: <15 seconds 4. Sensor type: electromagnetic O2 sensor 5. Use ambient humidity: 15~90% RH 6. Power: 3X1. 5VAA battery Package Included 1 x Oxgen gas detector (without battery) 1 x manual

Comfortable operating space

Dimensions: 85x61x21mm

Wire core type: copper core

Invisible adapter: ABS plastic

¹ Portable Fun: Each slime barrel is compact and easy to carry

With addition and subtraction

leakage and other multiple protections to protect your hard disk data at all times

Standby time: about 180 hours

🔹 Restore Charging Functionality: If your phone is experiencing charging issues

fresh and breathable

support adjustable length and elasticity

General Compatible with Apple:  Watch SE 2023 40mm