Item: Bluetooth remote shutter Model : C2 SPECIFICATIONS: Dimensions: 60*26*66*7mm Battery capacity: 210mAh button batteries, can be replaced freely Receiving distance: 30m visual distance Bluetooth version: V3.0 + HS System version: iOS, Android 3 over Current: 4mA Frequency: 2.4GHz Weight: 11g CE,FCC,ROHS,BQB approval