Brand: Treblab. MPN: HD-MAX. About TREBLAB HD-Max large Bluetooth speaker The TREBLAB HD-Max large loudest Bluetooth speakers is a well-built versatile speaker that uses 50W speakers to blast sound anywhere you take it. The HD-Max features a long-lasting internal battery but also comes with Type-C charging port that allows users to charge the speaker while it is in use. At a half volume the HD-Max can last for up to 20H. At full volume the HD-Max can go for up to 5H. The HD-Max Big Speaker is not only loud but features three separate sound modes to adapt and enhance the sound wherever you take it. The three modes change to Outdoor Indoor and Bass Boost so it can live up to any situation and setting it is one the coolest Bluetooth Wireless speakers loud with bass. TREBLAB HD-Max –Portable Loud Speaker with Bluetooth For All Occasions it is one of the best among big speakers bluetooth wireless speakers. Key Features: 3 MODES TO ENJOY MUSIC - The HD-Max Bluetooth Speaker Loud features indoor outdoor and Bass Boost modes to adapt its sound to all occasions. PASS-THROUGH CHARGING FOR NEVER-ENDING MUSIC - The Portable Speaker With Aux Input Can Run for Up To 20H and Can Be Used While Charging As Well. WIRELESS PAIRING WITH MORE SPEAKERS - The TREBLAB HD-Max uses TWS technology to pair with 1 more HD-Max for increased volume and surround sound. BRAVE THE OUTDOORS WITH IPX6 WATER-PROOFING - The HD-Max waterproof speaker for the shower can resist water and moisture of any kind. TAKE CONTROL WITH THE BUILT-IN MIC - The big speaker features a built-in microphone that lets users take hands-free calls. HARNESS THE POWER INSIDE - The TREBLAB Wireless Speaker with Bluetooth HD-Max’s most outstanding feature is that it doubles as a portable power bank compatible with all USB devices. Specifications: Wireless Technology: Bluetooth 5.0 Signal Range: 33 feet / 10 m Playtime: up to 20H on 30% volume up to 5H on 100% volume Charging time: up to 5 hours Phone Calls: Built-in mic Output power: 50W Dynamics quantity: 4 Water resistance: IPX6 Features: Powerbank 3 sound modes.