Features: x Motorcycle speakers: equipped with two high-power 3-inch full-range speakers, which can produce high-quality sound, lossless sound quality, and stereo surround sound, allowing you to enjoy the fun of music. x bluetooth: bluetooth chip, compatible with mainstream mobile phones, tablets, notebooks and other smart devices on the market, and the wireless connection distance can reach up to 10m, making music playback more free. x Easy to install: just match the size and plug and play. Applicable handlebar diameter: 26-33mm or 1.0"-1.3" (suitable for installing on motorcycle handlebars) x Support a variety of device audio sources: built-in USB interface, support mobile phone charging above 1A or U disk connection to listen to music, support MP3 or WMA or WAV lossless format, let you enjoy music life as you like. x Appearance: All-metal aluminum alloy shell is polished and sprayed with plastic, waterproof design, and the outdoor experience is very good. Specification: Name: motorcycle speaker Material: all metal aluminum alloy shell Maximum power: 50W Speaker impedance: 4 Waterproof grade: IP65 Frequency response: 1000Hz-20000Hz Power supply voltage: DC10.5-15.5V Signal-to-noise ratio: >=40dB (decibel) Channel isolation: >=36dB (decibel) Applicable handlebar diameter: 26-33mm or 1.0"-1.3" Color: silver, black Packing included: 2 x Motorcycle Speakers 2 x Allen keys 4 x Hexagon socket head screw M520 4 x Hexagon socket head screw M530 2 x Hexagon socket screws BM820 2 x flat media (anti-slip) 8 4 x Mounting brackets 2 x Cartridge 8 4 x Cartridge 5 4 x Brackets Non-slip Rubber 2 x remote control 1 x Remote Control Holder 1 x Power Cord 1 x Instruction Manual Note: 1. Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings. 2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.