Product details: Bluetooth version: V5.0 AB5365A Drive device: 2*5W 4 full frequency unit Product support: Universal devices, automatic decoding of common audio formats Product features: free high-definition one-touch calls, IPX5 waterproof water and dustproof, support 32G (SD/TF) USB FM AUX card playback. Product size: 180*69*37MM Charging compartment battery capacity: 1200mAh (rechargeable lithium-ion battery) Sound unit: 45mm single speaker, EXTRA BASS passive diaphragm and mono speaker Microphone: noise canceling microphone Built-in Operating voltage: 3.7V Input support: DC 5V Product frequency: 50Hz-18KHz Wireless working range: 5m high fidelity output, 10m effective distance Charging port: MIC -USB Battery life: about 12 hours (about 7 hours at maximum volume) Charging time: about 3-4 hours Product material: aluminum alloy frame cover.