Jager is the name given to the smallest unit of BNB on the original BNB Beacon Chain, formerly Binance Chain, where balances were recorded with eight decimal places. One jager equals 0.00000001 BNB, so 100 million jager make one coin, the same ratio as satoshis to bitcoin. The unit let wallets and the chain's BEP-2token system express fees and small transfers as whole numbers. BNB on BNB Smart Chain follows the Ethereum convention of 18 decimal places instead, so its smallest unit there behaves like wei, and the name jager is rarely seen outside older documentation and block explorers. Like other small units, it is a denomination for accounting, not a separate token.