Reference:
SPORTS BAND 1BSM515

Screen:
1.3 * 240 * 240 12-pin TFT screen.

Data transmission:
ble4.0.

Master Chip:
HS6620D.

From intenface:
USB.

Data saving time:
1 month.

Weight:
27g.

Battery:
150mah lithium polymer.

Loading time:
about 2 hours.

Strap Material:
TPU.

Dimension:
88.7 * 125 * 30 cm.