This is the Xiang Mu Hai black tea ball. There are 500g of black tea in the box. More specifically, there are 120 black tea balls in the box with 6 balls packed in a small self sealing pack. This would worked out to about 4.1g per ball.
This tea was designed for convenience and all you need was to pop the tea ball into a mug of boiling water. I found that I could refill my mug with boiling water to get another round of tea as well. Good for 2 infusions.
The regular teabag from supermarkets has about 2g of tea. This black tea ball instead has 4.1g of tea. The tea when brewed is strong and aromatic. I am not a fan of tea balls but this tea was very good and very appropriate for use in a busy office or while travelling.
However, I felt that Xiang Mu Hai that produced this tea could had made a marketing error in naming this tea 'little black men'. This label is not appropriate if this tea was marketed internationally. I hope the tea factory would change the name for this tea.