This impressive gift set makes the perfect present for a co-worker or boss! Included are a double-wall insulated bottle, wireless earbuds, and 2 replaceable button cell batteries. The included bottle is designed for use with cold or hot beverages, should only be washed by hand, and is equipped with an ABS plastic exterior, a 304 stainless steel interior, and a polypropylene plastic twist-on lid. Also, the featured earbuds are made of ABS plastic and include soft silicone covers and a rechargeable lithium-ion battery with a 37V/70 mAh capacity.