Please use lukewarm water for the spray. This will be less startling for your pet. Remove any remaining water each time. This will prevent mold growth. USB charging; cord included 【Size】 This item has a compact size of 10cm x 6.5cm (3.9in x 2.55in), making it easy to carry and perfect for pet grooming. 【Material】 Made of high-quality plastic, it is durable and can withstand long-term use. 【Function】 Equipped with a mute spray function, it can be used quietly, without stressing your pet. The volume is less than 60dB, allowing for safe use. - Size: 10cm x 6.5cm (3.9in x 2.55in) - Material: Plastic - Function: Mute spray function - Volume level: < 60dB