WEIXIER B759 Simple Expandable Men Shoulder Bag Large Capacity Laptop Backpacks % 12.9 inch 2017 Support U-disk / TF card

Support U-disk / TF card / AUX playback mode

USB transfer rate: 5Gbps / 400mbps

Heart rate sensor: HX3605

N5 (TX: 824-849MHz

WEIXIER B759 Simple Expandable Men Shoulder Bag Large Capacity Laptop Backpacks % 12.9 inch 2017 Support U-disk / TF card1. Multifunctional expandable main bag, zipper opening and closing can be expanded by 6 cm, to meet the needs of large items in daily life 2. Double compartments and multiple compartments, convenient for planning and storing travel items, partition storage and efficient access 3. Two way hand held, independent side hand held, two way use, different hand held methods, to meet various usage scenarios 4. High density wear resistant and splash proof