SANDA 2127 Electronic Single Movement Waterproof Sports Watch 1. Movement: electronic movement 2. Battery: MAXELL 3. Mirror: acrylic mirror 4. Strap: TPU 5. Case: zinc alloy 6. Waterproof: deep waterproof 7. Case height: about 4.5cm 8. Case width: about 5cm 9. Case thickness: about 1.7cm 10. Strap width: about 21-26cm 11. Circumference: about 16.3-24.3cm 12. Total length: about 25.6cm 13. Weight: about 87g Features: 1. Convenient hand-raising light function, long press the night light display button for 2 seconds to display the LT icon, turn on the hand-raising light function, tilt the wrist 45 degrees to light up, press the night light button when it is not turned on to light up 2. Sleep mode, daily power saving, long battery life, gently shake to cancel the sleep mode 3. Acrylic mirror, clear reading, durable, wear-resistant and scratch-resistant 4. One-click setting of time, calendar, alarm, luminous, etc. 5. Zinc alloy case with built-in waterproof ring, anti-collision and drop-resistant 6. Worry-free waterproofing, but do not operate buttons in water 7. TPU strap, soft and moderate, close to the wrist, comfortable and breathable, easy to pull and not easily deformed 8. Stainless steel bottom cover, daily waterproof and not easy to rust