Ring Whistle Plastic Sports Whistle with Dual-Tone high & Low Frequency, Two Sizes and 2g Ultra-Light, Great for Outdoor, Hiking, Camping, Ball Game, Dog Training & Emergency Rescue. (Purple, Small)

["❤Ring Shape & Comfortable Fit: Always have a whistle at your fingertips! - It is an attractive convenient whistle that fits on your finger like a ring, freeing up your hands while ensuring that you always have a whistle at your fingertips!","❤All-in-one portable ring whistle. Dual high & low frequency sound holes,Built with dual independent air holes for low-pitch (85dB) and high-pitch (120dB) sound emission. compact ring shape for all-day wear. Double Tone Sports Referee Whistle, High Decibel Ball Game Whistle for Football, Basketball, Soccer, Outdoor, Hiking, Camping, Dog training & Emergency Survival & Rescue.","❤2g Ultra-Light Wearable Ring Design, No Burden All-Day Carry.Only 2g net weight, zero load on daily wear. 2 precise inner diameter sizes available: 20.5mm Large Size & 19.0mm Small Size, fully fits most adult and youth finger circumferences. 7.4mm ultra-thin thickness, smooth rounded edge, no scratch, no snag on clothes/hair, can be worn on finger permanently without discomfort.","❤Ergonomic Blowing Position, Easy Blow & Stable Sound Emission Humanized air hole layout, optimized airflow channel design, only slight breath force is needed to make loud clear whistle. No hard blowing required, continuous stable sound output, easy for men, women, teenagers and beginners to master quickly. Compact ring shape, easy to store in pocket, backpack, survival kit without occupying space.","❤6 Fashion Solid Color Options, Multi-Scene Daily & Professional Use. Available in 6 solid colorways: Red, Black, Blue, Green, Yellow, Purple. Minimalist ring appearance, both practical emergency tool and daily casual accessory. Simply fit in your finger and blow gently to switch between high and low tones at two ends, no complicated operations.","❤Blow the ring whistle horizontally for best effect. The Air inlet and outlet are close. Do not cover the air outlet with your mouth."]