The Remax RB-M5 is the perfect combination of two products in one. Thermos - to always have a cold or warm drink on hand and at the same time music from a bluetooth speaker, so you can surround yourself with music you like all the time. The bottle has an original shape to surprise your friends and complete your everyday image. Another benefit is the pastel colours and the matt texture - you will not find this in any other accessory of this type. Material: cup lid: 304 stainless steel + PP + food grade silicone Cup body: inner and outer shell: 304 stainless steel Bottom speaker: upper and lower casing PC cavity: ABS Bluetooth version: V5.0 Transmission distance: ?10M Operating voltage: 5V Speaker power: 3MV Battery (mAh): 1000 mAh Charging time: 1-2 H Music playback: 4.5-5 hours (100% volume)