Copper construction: built from copper for durability and reliable performance across a range of diving conditions. Compact and lightweight: weighs only 10 g, making it easy to carry without sacrificing function during dives. Essential diving equipment: designed specifically for divers; offers easy operation and efficient buoyancy control underwater. Hairpin bar included: includes a hairpin bar to connect the discharge cable quickly and securely. Use scenarios Recreational openwater dive: use for precise buoyancy adjustments at different depths, with a durable copper body that withstands regular use. Travel or minimalist setups: ultralightweight design helps meet luggage limits, while the hairpin bar simplifies predive setup by enabling quick discharge cable connection. Recurrent or demanding dive tasks: reliable performance in environments where quick and stable buoyancy control is needed, with a simple connection method for the discharge cable.