Product Details: This popular, classic-style tumbler keeps you from worrying about having to stop and refill your beverage while enjoying the day. Take Coastal Cupz with you on the move or enjoy it at home or by the pool. Fits most cup holders. Features: Waterproof Insulated Cup Stainless Steel Detachable Speaker (9 Hour Battery Life) Micro USB Charging Cable Bluetooth 5.0 Wireless Connection Dishwasher Friendly (Remove Speaker) BPA Free Seamless Operation Download Manual (English) Descargar Manual (Español) Télécharger le manuel (Français) Specifications Dimensions: 4.25" x 8" Capacity: 24oz | 700mL IPX6 Waterproof Rating (charging port must be firmly closed) Empty Weight: 16oz | 468g Material: 304 inside and 201 outside Keep warm or cold 6 hours Battery Voltage/MAH: 3.7V/ 1000MAH Max battery life at 25% volume: 9.5 hours (real test) Auto power off saves battery life Micro USB Bluetooth effective distance: 10m