Battery & Bluetooth Chip for FreedConn BM2-S BM12 Motorcycle Bluetooth Helmet (Battery & Bluetooth Chip) auspowers_batchone self-locking rings attach to a

self-locking rings attach to a shaft by using friction from means such as teeth and notches to maintain placement

Easy to program some basic settings via keypad or connect with PC

or general craft projects

High "wet grab" or tack of PC-11 makes overhead and sidewall work easy without drip or sag

Battery & Bluetooth Chip for FreedConn BM2-S BM12 Motorcycle Bluetooth Helmet (Battery & Bluetooth Chip) auspowers_batchone self-locking rings attach to aBattery & Bluetooth Chip for FreedConn BM2 S BM12 Motorcycle Bluetooth Helmet (Battery & Bluetooth Chip) IMPORTANT REMIND To preserve battery life, it will enter deep sleep mode for long time no charge. Thus we suggest you to charge it regularly, at least 1 time a month, especially when you don't use it in winter. On this condition, Bluetooth mode may not available. To wake it up, please try to charge it with 6~12 volt charger for half an hour. If