Features: Compact and portable keychain timer with convenient attachment, perfect for time tracking in work, study, exercise, and kitchen use. Its lightweight ABS build (65×35×15mm) fits easily in pockets or attaches to keys/bags. Versatile timer proposals both countdown (up to 99:59) and stopwatch modes, suitable for kids' learning tasks or accurate meal preparation. Simple single button action ensures effortless time . Extremely lightweight at only 50g with a streamlined shape that won't disturb movement during workouts. The practical keyring keeps your timer within reach anytime. Features a distinct 70 80dB alert sound and bright LCD display with large digits for easy visibility. The noticeable alarm rest clear even in noisy environments or from a distance. Energy efficient design includes an easy reset function hold M(min) and S(sec) together to return to 00:00. Uses long lasting coin cell battery with intuitive button layout for extended performances. Specifications: Substance: ABS Size: 65 × 35 × 15 mm (subject to actual measurement) Weight: 50g (including battery) Screen: LCD screen Function: countdown / countdown extent: 99 minutes and 59 seconds capacity: 70-80 decibels Package Includes: Timer main unit × 1 button battery for testing × 1 (built-in) note: Pay attention to the storage methods.