300 mAh Series 5 Fitness Tracker Smart Watch Black

Outfitted with a pedometer that keeps a track of the number steps taken by you., Effectively monitors your sleep patterns by showing deep and light sleep hours., Bluetooth connectivity facilitates a wide transmission range., Replies to messages and receives calls instantly., Adopt adjustable stainless steel metal buckle design, easily slide adjust to fit your wrist, the innovative buckle makes the band length adjustable from 110mm to 205mm, suitable for wrist size 5"-9.5"(including the width of watch), Fit for most people, no need to measure your wrist to choose the size like the bands, The watch lugs on both ends (like original apple watch bands), can lock onto your watch securely and precisely, Our watch bands are available in many wonderful colors ,that can matched with your different styles, let you stand out on every occasions