Suzhou · Document reviewed
TSDZ2B, price known, watts not borrowed
A torque mid-drive listed at $331. The watt rating was not in the price table, so it is not invented here.
Tongsheng’s TSDZ2B is the torque-sensing alternative people cross-shop with a BBS. The kit price we publish is $331. Voltage on listings is commonly 36 or 48 V. The shell in this record is BSA 68 mm.
Shops often say 500 W. That sentence was not in the source behind the price, so continuous power stays blank. A blank field is the point. Copying 500 from a forum would make the card look finished and the fit check look clever.
The sensor is in the motor. Assist follows the pedal. Riders who want a switch-like cadence hit should read the BBS pages instead of hoping a setting will counterfeit it.
Battery and charger are extra. The $331 is not a complete bicycle and it is not a complete electrical system.
Configuration: Tongsheng TSDZ2B